Trephine Sizes: (Internal / External)
2.0mm / 3.0mm
3.0mm / 4.0mm
4.0mm / 5.0mm
5.0mm / 6.0mm
6.0mm / 7.0mm
7.0mm / 8.0mm
8.0mm / 9.0mm
9.0mm / 10.0mm
0.5mm Trephines wall thickness.
Marking Depths on the Trephine for accurate drilling,
Sizes 2.0mm, 4.0mm, 6.0mm, 8.0mm & 10.0mm.