TYROLIT , one of the world’s leading manufacturing of bonded grinding , cutting , sawing , drilling and dressing tools and system supplier of tools and construction industry. Drills bits for wet drilling Decades of experience in the production and application of core drill bits and core drill system give TYROLIT the edge in the marketplace As results, TYROLIT product can be viewed as innovative solutions for large-scale projects while remaining cost-effective for everyday construction site use. Especially suitable for drilling reinforced or normal concrete.  Can be operated on a drilling or hand-held. TYROLIT core drill bits are designed to work perfectly with TYROLIT Hydrostress machines TGD®-Technology The TYROLIT GRAIN DISTRIBUTION achieves a constant and high cutting performance due to optimum diamond  grain distribution Consistently very fast cutting performance and noticeable smooth running. Drill motor up to 3 KW. Soft to medium-hard concrete aggregates.  Quality tool for the most demanding applications and maximum economic efficiency.  Excellent   and consistent performance.  Universal  use and smooth core removal. Size / 30 X 400 X R 1/2"