The cheekplate revolves around the sheave axle allowing the block to open; a safety ball
stops the block from opening with an adjustable screw to set the ball on locked position.
There is a becket for the “hanging line”.
MATERIAL: sheave with composite fibre main bearing and double side ball bearing.
Hard anodized and teflon coated aluminium cheekplates with side rubber protections
(yellow rubber on the revolving cheekplate).
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