Zorlun 1Pc 3.175/4/5/6/8/10mm Two Flute UP DOWN Cut Milling Cutter 2F Carbide End Mill CNC Router Engraving Bits for Wood working(4x17x45L). Shank Diameter: 3.175/4/5/6/8/10mm;Cutting Edge Diameter: 3.175/4/5/6/8/10mm; Cutting Length: 12/15/17/22/25/32/35/42mm;Overall Length: 38-60mm;Package include:1 pc. Cutting, milling on:MDF, particle board, board with lagging, log;Acrylic, resin, plastic, chipboard, composite board, melamine board;Solid wood, native wood, plywood . Applied to:CNC Router Machining Center, Woodworking Machine, Advertising CNC Router, etc . Excellent combination of upper and lower blades, SHARP cutting edge . No burrs for Up and down spiral machining . High precision grinded and polished, high abrasion resistance and temperature resistance, good rigidity, not easy to break . Farbe:One Color