Used to clamp round and 3, 6, 9, ... square workpieces with very high holding power.
Clamping range 2 to 38 mm or 2 to 30 mm.
These jaws can be turned, thus increasing the clamping range to 70 or 56 mm.
The 3-jaw chuck is designed in such a way that all 3 jaws close centrally.
