TechDiamondTools Kit of 3 Diamond Lapping Paste Polishing Compound USA Made 400 600 1050 Grit Lapping Compound for Rock Glass Metal Jewelry Resin Marble with 10% of Diamond Powder

400 and 600 were used to help break in and seat rings in a rifle gas block that had a draggy and catchy feeling while depressing the piston. A little dab of 400 and working the piston a dozen times, clean and repeat with 600, then clean and lube created a smooth non catchy feel while operating the piston manually. Choose the right grits for your application and watch how quickly these premium blends get results!!

Excellent lapping pastes. Made my 1911 channels super smooth cycling.

Grit worked well on my transmission cone. Amount in the syringe was just enough!

I’ve used this to polish several distressed knives. A friend gave me a much neglected case folder. I was able to bring it back to usable and decent condition using this product.

This is really good lapping compound at a fair price.

Used for lapping upper receiver face. As others have said this is a great product for that purpose.

I used it to lap some valves. I'm very impressed. I will buy it again.

Trash. Too thick or dried out. Seemed like it was 10 yrs old. Maybe it was, maybe you'll get a better batch