- Replacement screw whalebone with a brass screw with a diameter of 11 mm - Screw the underwire in the place where to put the cue inner diameter of 8 mm - At the point where the skin is screwed with metal thread is an inner diameter of 5 mm - Whalebone stick to the cue tip and fitted with leather with brass screw thread with a diameter of 11 mm - Replacement leather with brass screw thread with a diameter of 11 mm can order HERE