For cutting/engraving/carving/grooving/slotting/drilling/hollowing/positioning/roughing/milling in materials like MDF,PVC,Acrylic,wood,solid wood,chipboard,composite board,organic board,core board,density board etc.these bits own sharp edge which is able for fast engraving makes high efficiency;durable,high precision and not easy to break;it is smokeless and burr-free while processingthe design of 2 flutes,mirror polishing, chip space of CNC Router Bit makes non-stick crumbs,smooth cutting and fast chip-removalColor:silverMaterial:tungsten steelProduct size approx.:3.175*17*38.5mPackage Contents:10*Double edged milling cutterOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.