7 Pack Straight Cutter Bits Slotting Cutter with 8mm Shank Wood Bit Cutting Diameter Router Bit Wood Bit with 8mm Shank for Woodworking 6/8/10/12/14/18/20mm . Premium Material Made of strong hardened steel, durable. High precision and high strength. High quality and robust - Industrial quality router bits, high quality carbide cutters with brazing for maximum strength. Product features< /p> Stable precision, fine workmanship, durable rust, clean cut, smooth rotation, fast operation, significantly improved service life. Cutting material has no burrs. Professional woodworking tools 7 kinds of cutter heads for different applications, to meet a variety of cutting needs. Mainly used for cutting and smoothing a variety of materials such as wood, plywood, MDF and other wood composite materials, etc. Features: Materials: hardened steel. Shank Diameter: Approx 8mm. Head Diameter: 6mm, 8mm, 10mm, 12mm, 14mm, 18mm, 20 mm. Contents: 7 x Straight Burr Bits ( 6mm, 8mm, 10mm, 12mm, 14mm, 18mm,