Material: YG8 tungsten steelColor: as the picture shownColor: as the picture shownFeatures:Blade diameter: 6-12mmShank diameter: 6mm(1/4")Total length: 45-65mmGroove: double rotaryA: cylinder shapeC: cylindrical ball headD: sphericalF: curved round headApplication: only can be grinding on one side, can not grind back and forthFeatures:The application of carbide alloy file is extremely common, it is applicable in mold making. Machine parts bevel edge, reverse round and trench processing. It can be processed from cast iron, cast steel, carbon steel, alloy steel, stainless steel, copper, aluminum and other metals, and marble, jade, bone and other non-metallic. Widely used in machinery, automobiles, shipbuilding, chemical industry, craft sculptures, etc. Good processing quality, high finish, long service life. It can process a variety of precision mold cavities. Easy to grasp, easy to use, safe and reliable. It greatly reduces tedious manual labor, reduces production costs. Carbide alloy file to support power tool or power tool or pneumatic tool (can also install on the machine tool)Quantity: 8 PiecesNote: Due to the difference between different monitors, the picture may not reflect the actual color of the workpiece. Thank you!