Included:1 x 12/15pcs 1/2"""" or 1/4"""" Router Bit SetFeatures:All heat-treated blade, with high concentricityResist torsion and strongHigh-grade carbide blade with sharp cutting, smooth rotation, operating lightTungsten Carbide Tipped Router Bits1/4"""" (6.35mm) Hardened ShankSpecifications:12pcsMaterial: 45 # carbon steel, YG8 alloyColor: As picture shownPacking: wooden boxShank Diameter: 1/4"""":6.35mm/ 0.25 inchWood Box Size: 1/4"""":163 x 133 x 50mm (L*W*H)15pcsSpecification:Material: 45 # carbon steel, YG8 alloyColor: As picture shownPacking: wooden boxShank Diameter: 1/4"""":6.35mm/ 0.25 inchWood 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: 12.7mmBearing Cove Box Bit: 22mm;Dovetail Bit: 12.7mm;Bearing 45 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;Notice:Please allow 2-3% error due to manual measurement and make sure you do not mind before ordering.Please understand that colors may exist chromatic aberration as the different placement of pictures, wood milling cutter