Model K11 chucks are provided with a set of internal jaws and a set of external ones which can be separated.

The jaws of K11A and K11C chucks are composed of two screw-connected parts. They can perform either as internal or external jaws through adjustment. Model K11A chucks are supplied in two-piece jaws as per ISO3442. Model K11C chucks are supplied with traditional two-piece jaws. Upon users' request, the soft blank top jaws are offered so to achieve ideal clamping accuracy after being refashioned.