---
product_id: 8087997
title: "NEIKO 10037A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 15-Piece Set"
brand: "neiko"
price: "€ 46.43"
currency: EUR
in_stock: true
reviews_count: 8
category: "Neiko"
url: https://www.desertcart.it/products/8087997-neiko-10037a-left-hand-drill-bit-set-high-speed-steel
store_origin: IT
region: Italy
---

# Left-hand twist for reverse drilling Titanium nitride coating for durability 135° split point for precision NEIKO 10037A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 15-Piece Set

**Brand:** neiko
**Price:** € 46.43
**Availability:** ✅ In Stock

## Summary

> 🔧 Unlock stuck bolts like a pro — don’t get left behind!

## Quick Answers

- **What is this?** NEIKO 10037A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 15-Piece Set by neiko
- **How much does it cost?** € 46.43 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/8087997-neiko-10037a-left-hand-drill-bit-set-high-speed-steel)

## Best For

- neiko enthusiasts

## Why This Product

- Trusted neiko brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Complete SAE Range:** 15-piece set covers a wide range of sizes, perfect for automotive and home repair pros.
- • **Titanium Toughness:** High-speed steel bits coated with titanium nitride for superior hardness and corrosion resistance.
- • **Organized & Portable:** Durable metal index case with size-marked slots keeps your bits secure and ready on the go.
- • **Reverse-Action Design:** Left-hand twist bits engineered for effortless removal of broken fasteners and screws.
- • **Precision Self-Centering:** 135° split point ensures no-walk drilling for flawless starts every time.

## Overview

The NEIKO 10037A Left-Hand Drill-Bit Set features 15 high-speed steel bits with a titanium nitride coating and a 135° split point for precise, fast cutting. Designed specifically for reverse drilling, these left-hand twist bits excel at extracting broken screws and bolts. Housed in a rugged metal case with size indexing, this set is a must-have for professionals and DIYers tackling tough automotive and home repair jobs.

## Description

The NEIKO Left-Hand Drill-Bit Set is an essential kit for anyone. Ideal for automotive or home use, these high-speed drills remove broken fasteners, screws, bolts, and studs with ease. Each angle-tipped drill bit is constructed with a twist style and a 135-degree split point for accurate self-centering. Made for fast and efficient cutting speed, our bits prevent walking to clear chips and particles extra quickly. Each bit is made of high-speed steel with a durable titanium nitride coating for ultimate corrosion resistance. This heavy-duty material offers a high surface hardness to help penetrate tough materials and reduce friction between the bit and the workpiece. The left-handed bit design is perfect for reversible drills with screw extractors, making this kit ideal for home maintenance, auto repairs, and more.Our titanium drill-bit set is available with 5, 13, or 15 standard SAE twist drills. The 5-piece SAE set is made with M35 cobalt high-speed steel, and it includes the following sizes: 5/64", 7/64", 5/32", 1/4", and 19/64". The 13-piece SAE set is made with M2 high-speed steel, and it includes the following sizes: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", and 1/4". The 15-piece SAE set is made with M2 high-speed steel, and it includes the following sizes: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 1 5/16", 1", 1 1/16", 1 1/8", and 1 1/4".Each drill-bit set comes with a metal index case for easy transportation between job locations. Each tool has an assigned hole in a drill-bit holder with size index markings for quick organization and easy storage. No matter the job, NEIKO has your back with our durable, dependable, and strong tools.

Review: Backed out Broken M6 Bolt in Block - Broke an M6 bolt off in the block over torquing water inlet for the thermostat housing. Used this to back it out - only needed the reverse drill bit. The joy of seeing the bolt back out was indescribable, lol.
Review: VICTORY! It worked well and here is the proof….. - So pleased - a month trying to get this stripped bolt off and I was running low on transmission fluid! I don’t write many reviews but hoping this helps the next person. Ok so I had a very badly stripped differential fill Allen plug. Standard plug on a Land Rober SUV. This was semi stripped by prior mechanic and I just made it worse without the right tools. Tried the cold chisel method (you can see from photos I whacked the s&@t out of it and no luck. Bought the other stripped allen key versions on desertcart (the ones that have a slight twist in a standard looking hex/Allen to provide grip) and they just won’t get enough grip (not even close in my case so a big waste of time) if you were as badly stripped out as I was. No chance at all. I was really thinking I would need to learn to weld and go buy a welder to attach another bolt on which was going to be my last resort… Tried this and worked extremely well (was done in 20 minutes) with the following comments: As you can see from the photo I used the 11/32 size which fit about a third of the way into the stripped hex differential plug loose. I tap tapped it in gently with a 3 lb hammer to get it about 2/3 of the way in. You don’t need to be poinding it in hard since these have a slight taper which makes them slightly larger as they go further in. As you can see after massively torquing it at the end while successfully remove the fill plug it was ultimately seated about. 90% down. With the large 15mm sized head you know have a solid place to add a socket with a breaker or heavy duty impact. Other comments - IMO very little chance of this snapping off as I see others concerned about - I can’t attest to the quality of the metal but the size I was able to use makes it less likely it would snap. If I were to use the smallest 5-6 (9/32 or less) of the extractors provided I would be more concerned about putting a long breaker bar but at this size no issues. I ended up having to put a 15mm socket on a two foot breaker bar / pipe to get this to finally come loose. And once it did it was literally just finger screwing the rest of it off. Amazing how a seized bolt will hold until it doesn’t. I tried my 3/8 inch (air) impact gun before the breaker bar which is a low clearance since I didn’t have a ton of space. It’s like 350 foot pounds of torque so a mid range impact and it didn’t budge this differential plug although it MAY have weakened it up a bit so my breaker bar worked easier. Best of luck of luck to those reading this but this is the best of 3-4 methods I used and wish I started here since it was easy. Last bit of advice don’t underestimate how much torque you need to get one of these seized plugs off! And if you are in a tight area and able to use one of the provided extractors with some reasonable girth a long breaker bar is the way to go…

## Features

- TWIST DRILL-BIT SET: Each steel drill bit features an angled tip, a twist style, and a 135-degree split point for precise self-centering. Designed to increase cutting speed, these drill bits prevent walking to quickly clear chips and particles.
- QUALITY TITANIUM BITS: These drill bits are constructed of high-speed steel with a titanium nitride coating, providing a high surface hardness to help penetrate tough materials. The steel also reduces friction between the bit and the workpiece.
- VERSATILE LEFT-HAND PIECES: The special left-hand design is ideal for use with reversible drills with screw extractors to remove broken fasteners, screws, bolts, and studs during home repairs, automotive garage projects, professional work, and more.
- THE RIGHT SIZE: Our versatile left-hand drill-bit kit is available in 5-piece, 13-piece, and 15-piece SAE sets. Choose the high-speed drill-bit set that fits your screw-extractor needs. Each set makes a great addition to automotive or home tools.
- ALL-IN-ONE SET: This kit arrives with the drill bits arranged in a high-impact metal index storage case. Each bit has a specific size slot for quick identification and easy organization, portability, and security in your home, garage, or workshop.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BMJX8C |
| Best Sellers Rank | #7,648 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #28 in Jobber Drill Bits |
| Brand | NEIKO |
| Brand Name | NEIKO |
| Customer Reviews | 4.1 out of 5 stars 7,990 Reviews |
| Cutting Angle String | 135 Degrees |
| Finish Type | Titanium |
| Finish Types | Titanium |
| Global Trade Identification Number | 00837013100379 |
| Included Components | 15 Piece Left Hand Drill Bit Set |
| Item Dimensions | 14.17 x 9.06 x 7.87 inches |
| Item Weight | 0.01 Ounces |
| Item dimensions L x W x H | 14.17 x 9.06 x 7.87 inches |
| Manufacturer | Ridgerock Tools Inc. |
| Material | High Speed Steel (HSS) |
| Material Type | High Speed Steel (HSS) |
| Model | 10037A |
| Number of Flutes | 2 |
| Point Style | Split Point |
| Shank Type | Straight |
| Surface Recommendation | Metal,Steel |
| Tool Flute Type | Spiral |
| UPC | 837013100379 |
| Unit Count | 1.0 Count |

## Product Details

- **Material:** High Speed Steel (HSS)
- **Finish Type:** Titanium
- **Shank Type:** Straight
- **Cutting Angle String:** 135 Degrees
- **Brand:** NEIKO

## Images

![NEIKO 10037A Left-Hand Drill-Bit Set, High-Speed Steel Drills with Titanium Nitride Coating, Reverse-Twist Drill Bits, SAE Sizes, 15-Piece Set - Image 1](https://m.media-amazon.com/images/I/71wxvtBXwCL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Backed out Broken M6 Bolt in Block
*by T***T on December 1, 2025*

Broke an M6 bolt off in the block over torquing water inlet for the thermostat housing. Used this to back it out - only needed the reverse drill bit. The joy of seeing the bolt back out was indescribable, lol.

### ⭐⭐⭐⭐⭐ VICTORY! It worked well and here is the proof…..
*by S***C on June 17, 2023*

So pleased - a month trying to get this stripped bolt off and I was running low on transmission fluid! I don’t write many reviews but hoping this helps the next person. Ok so I had a very badly stripped differential fill Allen plug. Standard plug on a Land Rober SUV. This was semi stripped by prior mechanic and I just made it worse without the right tools. Tried the cold chisel method (you can see from photos I whacked the s&@t out of it and no luck. Bought the other stripped allen key versions on Amazon (the ones that have a slight twist in a standard looking hex/Allen to provide grip) and they just won’t get enough grip (not even close in my case so a big waste of time) if you were as badly stripped out as I was. No chance at all. I was really thinking I would need to learn to weld and go buy a welder to attach another bolt on which was going to be my last resort… Tried this and worked extremely well (was done in 20 minutes) with the following comments: As you can see from the photo I used the 11/32 size which fit about a third of the way into the stripped hex differential plug loose. I tap tapped it in gently with a 3 lb hammer to get it about 2/3 of the way in. You don’t need to be poinding it in hard since these have a slight taper which makes them slightly larger as they go further in. As you can see after massively torquing it at the end while successfully remove the fill plug it was ultimately seated about. 90% down. With the large 15mm sized head you know have a solid place to add a socket with a breaker or heavy duty impact. Other comments - IMO very little chance of this snapping off as I see others concerned about - I can’t attest to the quality of the metal but the size I was able to use makes it less likely it would snap. If I were to use the smallest 5-6 (9/32 or less) of the extractors provided I would be more concerned about putting a long breaker bar but at this size no issues. I ended up having to put a 15mm socket on a two foot breaker bar / pipe to get this to finally come loose. And once it did it was literally just finger screwing the rest of it off. Amazing how a seized bolt will hold until it doesn’t. I tried my 3/8 inch (air) impact gun before the breaker bar which is a low clearance since I didn’t have a ton of space. It’s like 350 foot pounds of torque so a mid range impact and it didn’t budge this differential plug although it MAY have weakened it up a bit so my breaker bar worked easier. Best of luck of luck to those reading this but this is the best of 3-4 methods I used and wish I started here since it was easy. Last bit of advice don’t underestimate how much torque you need to get one of these seized plugs off! And if you are in a tight area and able to use one of the provided extractors with some reasonable girth a long breaker bar is the way to go…

### ⭐⭐⭐⭐ Good quality but I still broke one.
*by J***E on October 25, 2025*

Be careful opening the case. The lid was so tight, when it finally gave way, the bits went flying everywhere. The quality of the bits seemed fair enough, but I broke the first one I used trying to extract a busted bolt on a hot agitator. The steel bolt had become hardened from excessive heat and the bit wasn’t even making a mark before it snapped. I ended up replacing the whole part. I grabbed a piece of 1/4 inch steel stock and drilled a couple holes through it without any trouble just to see if the bits could do it. Take your time and use cutting oil when drilling on metals.

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-02-24*