1. Can cut holes up to 25mm thick. 2. The cutting length is 41mm. 3. For less horsepower machine. 4. The cutting edges can be re-sharpened. 5. With its very precise and sharp tungsten carbide tipped cutting edges, the hole cutter can be run at higher feed rates and speeds to create holes of exceptional quality and accuracy. 6. Suitable for all kind of rail drilling machine. 7. The TiN coatings increase tool life.