Stainless steel springs
5 sizes available to suit most of the Selden block range
Keeps a block upright on the deck
When used in conjunction with a deck eye strap, the spring will keep the block from capsizing onto the deck when the line isn't under load.
The number suffix on the block part number refers to the sheave diameter.
- PBB stands for plain bearing block
- BBB stands for ball bearing block
- RBB stands for roller bearing block