Pack of 10. For working in concrete, concrete with reinforcing iron, masonry and natural stone, optimized carbide drill tip, new carbide geometry for superior service life and best power transmission, even less vibration and precise guidance for more stability, easy centering, fast drilling, comfortable working, with patented KVS spiral (core reinforced spiral), mounting system: SDS-plus, 2-groove locking, material: steel, surface: gray, shot blasted, rust protection treated
