Series 40 Ball Bearing blocks are the latest range to combine new block style with the latest advances in bearing technology and smart features. Series 40 ball bearing blocks utilize the two stage ball bearing system to ensure low-friction performance right up to teh maximum working loads. Black sheave. 7/16" rope max. Pin diameter is 3/16".

MWL #: 880
Single block, spring stand up

Note: This item has been discontinued. We have none in stock and it is no longer available to us.

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