Dewalt DT9416 Extreme SDS Max 4-Cutter 20mm x 200mm x 340mm The Dewalt DT9416 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: 20mm Length: 340mm Working Length: 200mm Cutters: 4