For medium-hard concrete products, hard bricks and highly compressed sand-lime brickLaser-welded segmentsThread mount: M16Use on dust extractors with M16Perforated cover for easy removal of the drill coreAbrasive: Diamond in metallic bondBase body: SteelWorking depth: 70 mmGrinding layer height: 10 mmWall: 2 mmColor coding system: BlueWear protective clothing, goggles and ear protectorsCaution: Core drills should always be used without a hammer blow