Tungsten Carbide Burr Set of 5, STARVAST Double Cut Rotary Burr Set with 10mm Head Size and 1/4 Shank Die Grinder Bits Rotary Files for Metal Carving, Polishing, Engraving, Drilling

I used them to grind old and new welds including though old paint and rust. The burr that I used remained sharp after grinding roughly 100 welds. I am impressed. Be aware that the burr creates needle sharp shards of steel that easily penetrate clothing and skin.

Came on a timely order, they were what was said, looks like a nice set of bits. I haven't used them yet so don't knowhow well they will work and how well they will stand up. This is why I gave them a 4 star

I used one of these carbide burr on one of my engine project and it handle really well. I shaved of notches in each bore cylinder for clearance to fit larger piston rod and the oil girdle. It cut smoothly with no problems throughout the whole project.

See title.

half the price of a set from harbor freight and have yet to break on me Ive probably put in 20 hours of pure grind time on one piece and it doesn’t have a single chipped tooth yet.

The burrs did exactly what I hoped for, removed material in curved hard to get at places in my wood project

These are the heavy duty ones you’re looking for grind threw stainless steel like butter

It’s worth the money