Quantity20 pcs Solid Carbide Rotary Burr Set, 0.118 inch shank(3mm) ,approximate 1/8 inch, fits dremel and most small rotary tools^ DurableWhole Piece made of heat-treated solid tungsten carbide that lasts long working life, sharp and sturdy^ TargetSuitable for all skill level | this is a essential kit for woodworkers & enthusiasts who cleans up welds or works with metal frequently, easy to grasp and use, safe and reliable^ VersatileWidely used for metalwork, tool making, model engineering, wood carving, jewelry making,welding, chamfering, casting, deburring, grinding, cylinder head porting and sculpting^ ConvenientGenerally can be used with handheld electric or pneumatic tool drive (can also be used in machine tool) ^