Proxxon 6 Piece Set of MICROMOT Steel Collets: 1/32", 1/16", 5/64", 3/32", 7/64" and 1/8" (28 940)Fits all MICROMOT machines, except the engraver GG 12. One each in size 1 32", 1 16", 5 64", 3 32", 7 64" and 1 8" (1. 0, 1. 5, 2. 0, 2. 4, 3. 0 and 3. 2 mm) come as a set in a practical holder for storage along with one clamping nut. Sizes Included (One Each): 1 32" (1. 0 mm) 1 16" (1. 5 mm) 5 64" (2. 0 mm) 3 32" (2. 4 mm) 7 64" (3. 0 mm) 1 8" (3. 2 mm) MICROMOT steel collets are hardened and have a high, consistent flexibility so that they maintain