English 
Closed-type mounting blocks consist of a roller, the axis of which is located between two plates (cheeks), reinforced rods, it is possible to perform blocks: with a hook, with a finger.
It is used to change the direction of traction and reduce the traction force during rigging operations. It is used in mechanisms with both manual and electric drive.
Load capacity-0.5 t
Rope diameter-3.6-9mm
The roller diameter is 80mm
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