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Selden PBB (Plain Bearing Block) range features a fiberglass-reinforced sheave with a Teflon bushing, a stainless steel strap, for strength and durability. The range also has reinforced cheeks to prevent lines from wedging and a sliding swivel locking mechanism.
The 70mm PBB range is designed for heavy and static load applications in halyard tuning, mainsheet systems, and boom vangs on offshore boats.
