Sanuke 10pcs 2 Gauge (AWG) 5/16" (M8) Wire Connectors, Heavy Duty Pure Copper Lugs, Electrical Welding Ring Terminal, Marine Battery Cable Ends with 3:1 Dual Wall Adhesive Heat Shrink Tubings

I used these 4-AWG 3/8” ring terminals for a battery cable project and they worked great. The lugs feel solid and well made, and the copper construction provides good conductivity for high-current applications like battery connections, grounding, or power distribution. The barrel opening fits 4-gauge cable properly and makes it easy to insert the wire before crimping. Once crimped with a proper crimp tool, the connection feels tight and secure. These also come with heat shrink tubing, which helps seal the connection and gives the finished cable a clean, professional look.  Another thing I liked is the tinned copper finish, which should help resist corrosion over time, especially in automotive or outdoor environments where moisture can be an issue.  Pros • Solid copper construction • Fits 4-gauge cable properly • Crimps securely with the right tool • Heat shrink included for clean finished connections Cons • None so far Overall these are a great option if you’re making your own battery cables, grounds, or power leads. They’re simple, reliable, and do exactly what you’d expect from a set of 4-AWG cable lugs.

Seem nice. No issues. Shrink sleeves worked well too.

These lugs work well. They are easy to install and crimp and they've been working great for me for three years. And they're a really nice value for the money, much cheaper than inferior lugs I've purchased locally.

Excellent Price. Works Well.

Very good quality would buy again

Very nice wire lugs. The copper is very heavy gauge, and the included heat shrink tubing is pre-cut, color coded, and high quality. Very nice kit to work with, this is the way to go.

Got these for a project on my truck, and am incredibly happy with them. I'll admit I rednecked the crimping on a few of them, put them on my anvil and hit them with a hammer....worked like a dream, ugly as sin, but worked. I also did a few of them correctly with a crimping tool, also bought from Amazon, and they worked really well.....better looking too. I will be buying these again for projects in the future.

Right product for the job