Crank thermoplastic.
Cylinder grip thermoplastic and steel.

Black grey thermoplastic.
Steel parts black oxidised.

The hub cover is supplied unassembled. The crank handles can be secured to the shaft by cross-pinning or by parallel key together with a DIN 6912 cap screw and DIN 7349 washer. Two actions must be made to bring the safety cylinder grip into an operating position:
- Swing the grip out around the pivot shaft until it stops (90°).
- Push the grip in an axial direction into the lock position.
The pushed-in position is the most comfortable for cranking. The grip swings back automatically after releasing.
Versions with transverse bore are secured using the ISO 4027 (DIN 914) grub screw.

1) Position of the transverse bore to the keyway is offset by 90°.