Dewalt DT9410 Extreme SDS Max 4-Cutter 16mm x 400mm x 540mm The Dewalt DT9410 is an SDS Max Drill Bit from the Extreme range. These high-quality hammer drill bits with 4 cutter X-head have been designed for improved user comfort, reduced vibration and improved hole quality. They are extremely durable thanks to their heavy-duty shank. Features: High-quality hammer drill bit with 4 cutter X-head design for improved user comfort, reduced vibration and improved hole quality 4-Flute spiral with maximised flute entry Heavy-duty shank for maximum durability Specification: Diameter: 16mm Length: 540mm Working Length: 400mm Cutters: 4