Drilling and Countersinking in One Step - The Brad Point Drill Bit with Countersink efficiently drills, countersinks and deburrs in one step in wood. Mounted on a brad point drill bit, all three operations are achievable at once. The countersink is suitable for use on hard and soft wood, laminated and non-laminated chipboard and plywood. It is intended for use in drill stands and drill drivers. This multi-functional bit, made of tool steel, has a 90-degree countersink angle, five cutting edges and can also be used as a depth stop. The countersink comes with a hexagon pin key, a brad point drill bit and an arbour-mounted countersink. Cylindrical shank compatible with three-jaw drill chucks. Features and Benefits • Efficient Drilling and Countersinking in One Step in Wood. • Brad Point Drill Bit with Countersink efficiently drills, countersinks and deburrs in one step in wood • Mounted on a brad point drill bit, all three operations are achievable at once Specifications Diameter (D): 4