Forged from high quality tool steel with chip clearance groove and hollow ground point. Centerless ground and true running. Ground spade bit head. For cutting holes in laminates and wood. 6mm hexagon shank to prevent slipping at speed. | | Supplied in wallet. | Contents: 9 (3/8″), 13 (1/2″), 16(5/8″), 19 (3/4″), 22 (7/8″) and 25mm (1″).