Stem extensions STM2

Kit contains 5pcs of each of the following sizes
7-7, 7-8, 7-9, 8-7, 8-8, 8-9, 9-7, 9-8, 9-9, 9-1.0, 1.0 - 1.0, .9-1.2, 1.2-
1.2
Total of 65 pcs per kit, refils are available for each size.