12PCS Router Bit Set 1) Straight bit (Size: 6mm, 12mm, 16mm) 2) 90deg. "V" grooving bit (Size: 12.7mm) 3) Doverail bit (Size: 12.7mm) 4) 45deg. Chamfer bit (Size: 32mm) 5) Bearing flush trim bit (Size: 12.7mm) 6) Rounding over bit (Size: R6.3mm, R9.5mm) 7) Cove box bit (Size: R6.3mm) 8) Cove bit (Size: R6.3mm) 9) Roman ogee bit (Size: R4mm) Shank Size: 6mm, 1/4", 8mm, 12mm, 1/2" etc. up to your choice.