HIGH SPEED SWISS DIAMOND 24 BURR SET Use genuine diamond carving points for detailing, texturing, feathering, stoning, feather insertion, insetting eyes & anywhere fine detailing, excellent control & smooth finish are desired. The long lasting (up to 1,500 times longer than carbide) & superior abrasive properties of diamond are well known. So we searched the world for the best & discovered an uncompromising Swiss manufacturer. Unlike other cheaper burrs, for superior cutting, performance & long life, our diamond burrs feature the finest uniform natural diamond grit (100-170 micron) layered not once, but 4 times! As each layer of diamond wears it exposes fresh diamond grit. Head & shank are precisely machined from one piece of surgical stainless steel, not welded. The final result is a quality burr so superior that it will out-perform all others. Works great with most all power carvers that accept 3/32" shank burrs. Selection includes all of the 24 most useful shapes for carvers in 3/32" shank. Grits are pre selected 100 -170 micron, larger burrs are coarser smaller burrs are finer. Length 1.75", max RPM 45,000. Made in Switzerland.