For set collars of the standard families GN 706... and GN 707..., the clamping kits GN 311 replace the hexagon socket screw DIN 912. That allows the set collars to be adjusted easily and quickly without tools.
The table of dimensions of the set collars shows the corresponding hand lever for the respective set collar size d1.
Under GN 706.4
, semi-split set collars GN 706.2
are generally offered with clamping levers.