60 mm Ball Bearing Block - Single, Swivel Backstay thrust bearings to stabilize the

thrust bearings to stabilize the sheave when the rope enters or exits the block with

reducing wear and friction

while glass fiber reinforced cheeks provide strength

halyards and backstay control in applications where stability and quick adjustments are key

That means

60 mm Ball Bearing Block - Single, Swivel Backstay thrust bearings to stabilize theThe BBB60 Single Swivel Block is a 60 mm ball bearing block with a swiveling shaft. A plastic washer, acting as a swivel lock, is placed between the block body and the shackle to lock the shackle at either 0 or 90. The block features Delrin ball bearings for smooth rotation and glass fiber reinforced cheeks for strength. Ideal for use with mainsail, genoa, and spinnaker sheets, or control lines, in both static and dynamic load applications. Safe