Can I use this on stone like hard river rock?

So far I have only used it on glass and clay/ceramic. I would strongly advise if you do try it, use water to help with the friction. It says that you can use it on stone , gemstones, rocks, and pebbles. Hopefully that answers your question

what is the chuck size 3/8 or 1/2 , I have 3/8 inch chuck?

I have a dewalt drill with 3/8 in chuck its perfect.

What maximum thickness are these suitable for? What is the thickness of the diamond dust on the smallest three cutters?

I can't tell you in exact dimensions how thick the coating of the cutters are. I can tell you that I cut a hole through a substantial hi-power electrical insulator big enough to run a 120-v plug through. Before using these bits-nothing could touch the ceramics it was made of. The secret to success is to run water on the project while drilling.

What machine can i buy for the drill bits?

and drill will work, cordless or corded

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YLYL Diamond Drill Bits for Ceramic, Diamond Hole Saw Drill Bit Set Kit, Glass Drill Bit for Bottles, Pots, Marble, Granite Stone, Tile Cutting 0.23 Inch - 2 Inch (6 mm - 50 mm) Pack of 15

YLYL Diamond Drill Bits for Ceramic, Diamond Hole Saw Drill Bit Set Kit, Glass Drill Bit for Bottles, Pots, Marble, Granite Stone, Tile Cutting 0.23 Inch - 2 Inch (6 mm - 50 mm) Pack of 15

Product ID: 551831956

Details

Brand
YLYL
Cutting diameter
0.31 Inches
Finish type
Diamond
Material
Diamond Glass
Shank type
Straight

💎15 precision diamond-coated sizes

💧Water lubrication for extended life

🛠️Industrial-grade carbon steel core

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Description

💎 Drill Like a Pro, Shine Like a Diamond!

ALL IN ONE PRO KIT - A comprehensive 15-piece set tailored for professionals who demand flawless results across multiple hard surfaces.
PREMIUM DIAMOND COATING - Experience ultra-sharp, wear-resistant edges that deliver clean, chip-free cuts every time.
VERSATILE 15 SIZE RANGE - From delicate 6mm to robust 50mm, drill perfect holes in glass, ceramic, marble, and granite with unmatched precision.
OPTIMIZED COOLING DESIGN - Large clearance holes ensure efficient water flow and chip removal, keeping your drill bits cool and your workflow smooth.
INDUSTRIAL GRADE DURABILITY - Crafted from high-speed carbon steel for long-lasting performance under heavy use.

The YLYL 15-piece Diamond Drill Bit Set offers a versatile range of sizes (6mm to 50mm) with industrial-grade carbon steel cores and premium diamond coatings. Designed for precision drilling in glass, ceramic, marble, granite, and more, its optimized cooling system extends bit life and ensures clean, accurate holes. Perfect for professionals seeking durability and flawless performance in one comprehensive kit.

Specifications

ASIN	B08MCG68XG
Best Sellers Rank	928,698 in DIY & Tools ( See Top 100 in DIY & Tools ) 7,471 in Drill Bit Sets
Brand	YLYL
Customer Reviews	4.3 4.3 out of 5 stars (4,030)
Cutting Diameter	0.31 Inches
Finish Types	Diamond Coating
Manufacturer	YLYL
Manufacturer Part Number	YLYL011
Material	Diamond,Glass,Marble
Minimum Bore Diameter	0.31 Inches
Model Number	YLYL011
Number of Flutes	1
Number of Pieces	15
Point Style	Diamond Point
Set Name	YLYL 15-Piece Diamond Drill Bit Set
Shank Type	Straight
Surface Recommendation	Ceramic, Glass, Porcelain
Tool Flute Type	Spiral
UPC	739944296209
Unit Count	15.0 count

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€ 34.96

Duties & taxes included

In stock

Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Italy.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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