Dewalt DT9435 SDS Max Extreme 32mm x 570mm x 450mm 4-Cutter High quality hammer drill bit with 4 cutter X-head design for improved user comfort, reduced vibration and improved hole quality. Features: Maximised central core that enables more efficient energy transmission to the drill bit head. 4-Flute spiral with maximised flute entry Heavy-duty shank for maximum durability Specification: Diameter: 32 cm Length: 57 cm Working Length: 45 cm Cutters: 4 Pack Quantity: 1