Gear drive 909290, without Safety Device. For use in Hueck side-hung windows operated by a 7mm. square-pin window handle.If you are looking for a gear drive for Hueck tilt&turn or TBT hardware, use the 993450 instead. That one is equiped with a safety device to prevent incorrect operation...
Gear drive 993450, wit Safety Device. For use in Hueck turn-tilt or tilt-before-turn windows operated by a 7mm. square-pin window handle.If you are looking for a gear drive for Hueck side-hung windows, you can use 909290 instead. This type is the same, however, without the safety device...