Description: Router CNC Engraving Wood Working Bottom Cleaning Bit - 1/2" Shank Industrial grade micro grain carbide blade, suitable for hand-making or woodworking 100% brand new and high quality router bits Made of high quality tungsten steel alloy forging blade and titanium steel material. Build-Up Resistant Coating Specification: Material: Carbide alloy Shank Diamter: 12.7mm( 1/2") Whole Length: Approx. 55mm Max. Cutter diameter: 55mm Package Includes: 1 Piece Router Bit