Impact core bit, the 6 precisely ground cutting edges soldered with silver achieve a long service life even in hard materials. The hardened steel body with M 16 internal thread and the optimized concentricity is ideal for concrete, stone, masonry, clinker, bricks and lightweight building materials. Mounting shaft in hexagonal or SDS-Plus version. Low-wear hard metal teeth with slot soldering ensure maximum stability. With replaceable center drill suitable for light impact use (depending on material), precise insertion of switch / distribution boxes possible. ACCESSORIES Center drill: 9 (8)