10pcs Dremel Carbide Burrs Drill Bit Set for Metal Woodworking Carving Tools Rotary Burr Micro Drill Bits Mini Glass Diamond

Feature: 1.Tungsten Carbide Alloy Material,Processing hardness HRA higher than 85. 2.this drills used with the High-speed polisher.the best Rotating speed is 6000-40000 R/min 3.This drills can used for repairing metal eage/metal burrs/mold cavity. also It\'s a good helper for processing jade/ceramic/glass/marble. you can used the drill to carve the wood sculpture. 4.this drills have higher production efficiency for your work.It\'s better than other drill and hand tools. 5.this drills have long life because of the Tungsten Carbide Alloy Material.