The Faithfull 30 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 Straight: 5.0 x 12mm. 1 x Straight: 6.0 x 20mm. 1 x Straight: 8.0 x 20mm. 1 x Straight: 10.0 x 20mm. 1 x Straight: 12.0 x 20mm. 1 x Straight: 14.0 x 20mm. 1 x Straight: 16.0 x 20mm. 1 x Straight: 18.0 x 20mm. 1 x Straight: 20.0 x 20mm. 1 x Dovetail: 12.7 x 13mm. 1 x 90 V-Groove: 9.5 x 9mm. 1 x 90 V-Groove: 12.7 x 9mm. 1 x Core Box: R3.2mm, 6.0 x 6mm. 1 x Core Box: R6.3mm, 12.7 x 10mm. 1 x Classical Panel: 12.7 x .