The Faithfull 12 Piece Router Bit Set with 1/4in shank. Tungsten Carbide tips ensure long life and the storage case provides a safe place to store the bits when they are not being used. Different cutter shapes enable the creation of a variety of profiles, grooves and mouldings in softwoods, hardwoods, MDF or plywood. Shank: 6.3mm (1/4in). Contains: 1 x Dovetail: 12.7 x 13mm.1 x Straight: 6 x 20mm.1 x Straight: 12 x 20mm.1 x Straight: 16 x 20mm.1 x Flush Trim: 12.7 x 13mm.1 x Rounding Over: R7.9mm, 25 x 14mm.1 x Rounding Over: R9.5mm, 28 x 14mm.1 x Roman Ogee: R4mm, 25 x 12mm.1 x Core Box: R6.3mm, 12.7 x 10mm.1 x Cove: R6.3mm, 22 x 12mm.1 x 45° Chamfer: 32 x 13mm.1 x 90° V-Groove: 12.7 x 9mm.Additional Information:• Shank Size (in): 1/4in• No. Pieces: 12