This is a set of milling cutter bit set, 12 pcs bits in a set, made of carbide material, with high hardness and b resist torsion. All heat-treated blades, with high concentricity and high accuracy. High-grade carbide blades with quick cutting, smooth rotation, operating light. You can have a try. Specifications: Name: 12PCS Milling Cutter Bit Set Shank diameter: 1/4" shank, 8mm shank (optional) Package size: 165 * 125 * 50mm / 6.50 * 4.92 * 1.97in Package weight: 500g / 1.10lb Packing List: 3 * Straight Bit (Sx6/Sx12/Sx16mm) 1 * 90 V Grooving Bit (Sx12.7mm) 1 * Dovetail Bit (Sx12.7mm) 1 * 45 Chamfer Bit (Sx32mm) 1 * Bearing Flush Trim (Sx12.7mm) 2 * Rounding Over Bit (SxR6.3mm/SxR9.5mm) 1 * Cove Box Bit (SxR6.3mm) 1 * Cove Bit (SxR6.3mm) 1 * Roman Ogee Bit (SxR4mm)