Through hardened and ground.
Corrosion protection: Collets fully coated with FAHRION Protect, including the functional faces.
The coating increases the service life of the collet and ensures full functionality and precision.
The collet clamping ⌀ range is always up to 1 mm less than nominal, e.g. ⌀ 10 − 9 mm, except for ⌀ 1, 1.5 and 2 (where it is only 0.5 mm).