The TYR 34214903 types No: 34214903 name: Hohlt Diamond Hollow drill bit of Tyrolt. Shape: Hohlt Dimensions: 25 x 45 x M14 specification/grain size: Gres with contents: pack of 1. Tyrolit is one of the market leaders in the industry. And are looking for the most precision – For both the quality of the products made and when about innovation. The on-going development and improvement of products for all business areas is a central company destination. Tyrolit has a wide range of products of for a wide range of applications. Including both products for everyday use as well as customized special requests for customized processes.