Router Bit Size: Cutting depth for 6mm/4.8mm/6.35mm; Cutting width for 14mm/16mm/18mm/20mm Premium router bit set with carbide blades for long life in hard and soft wood Set of 4 router bits for fine work in soft and hard wood as well as wood composites. Perfect choice for all woodworkers, joiners, interior builders and other building tradesmen For routers with 8mm tool holders of all power tool brands