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.