with SDS-plus shank (ø 10 mm), easy centering and drilling thanks to the innovative ZENTRO design, reduced friction and centric guidance in the drill hole for exact and perfectly fitting holes, the core reinforcement ensures high breakage resistance and ensures that the impact energy of the rotary hammer is transferred directly to the drill bit, the 4-spiral geometry of the drill ensures fast drilling dust removal, for all drilling work with fast drilling progress in stone, (iron-reinforced) concrete and natural stone