Included: 1 x 12/15pcs 1/2" or 1/4" Router Bit Set Features: All heat-treated blade, with high concentricity Resist torsion and strong High-grade carbide blade with sharp cutting, smooth rotation, operating light Tungsten Carbide Tipped Router Bits 1/4" (6.35mm) Hardened Shank Specifications: 12pcs Material: 45 # carbon steel, YG8 alloy Color: As picture shown Packing: wooden box Shank Diameter: 1/4":6.35mm/ 0.25 inch Wood Box Size: 1/4":163 x 133 x 50mm (L*W*H) 15pcs Specification: Material: 45 # carbon steel, YG8 alloy Color: As picture shown Packing: wooden box Shank Diameter: 1/4":6.35mm/ 0.25 inch Wood Box Size: 1/4":17.3cm*12.4cm*5.1cm/ 6.8*4.9*2 inch (L*W*H) Each Size is as follows: Cove Box Bit: 12.7mm Bearing Cove Box Bit: 22mm; Dovetail Bit: 12.7mm; Bearing 45å¡ Chamfer Bit: 32mm; Bearing Flute Trim Bit: 12.7mm ; Straight Bit: 16mm; Rounding Over Bit: 22mm; Straight Bit: 12mm; Straight Bit: 6mm; Rounding Over Bit: 28.6mm; Grooving Bit: 12.7mm; Roman Ogee Bit: 25mm;