Features 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. 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. Fastening Bolt Assembly used with / Core drilling In concrete