General description 13mm Quick Release Self-Tightening Chuck SDS Adapter Hammer Drill Bit is designed for efficient and secure drilling. It features a high-speed steel (HSS) construction with a comfortable coated surface for enhanced grip and usability. Technical specifications Material: HSS Clamping range: 2-13 mm Mounting: 1/2 - 20 UNF Power requirement: for impact drills with a power of 1050 W