70 mm Plain Bearing Block - Single, Swivel, Shackle adaptor Twin-Cam A plastic washer acts as

A plastic washer acts as a swivel lock

The toggle accepts PBB50

Safe working Load: 480 kg

The PBB40 Single strap block is a 40mm plain bearing block with a fixed stainless strap

70 mm Plain Bearing Block - Single, Swivel, Shackle adaptor Twin-Cam A plastic washer acts asThe PBB70 Single Block with Shackle Adaptor is designed to fit deck ring T base shafts of other mast brands. Consequently, this block is designed to route a halyard from the mast and back to the cockpit. It features a 70mm sheave diameter and the block is made with top quality materials for optimal performance under all conditions. The practical switch from swivelling to fixed shackle and the stainless steel straps ensure increased safety and