Kelvin Power Tools stock a great selection of Bosch diamond drill bits for the dry drilling with the GTR tile routers. These bits are in the "Best for Ceramic" range and are suitable for soft wall tiles through to very hard floor tiles and natural stone. They are also "Fast Cut" diamond bits which means that you can cut quickly and easily without the use of a coolant. For further information on Bosch tile router bits, please contact us by phone, by e-mail or in store. We have a number of expert staff members on site who will be happy to answer any questions and provide advice and guidance.