Description
57mm Double Ball Bearing Block
Series 57 blocks are useful wherever a powerful compact multitackle is required. The ball bearing Macro range are freer running than their plain bearing counterparts and have black sideplates and sheaves. They are ideal for mainsheets up to 8.5m (28 ft) yachts and smaller multihulls.
Specifications:
- Sheave size: 57mm
- Rope size: 12mm
- Holding power at 180° wrap: 10:1
- Overall height: 89mm
- Shackle pin: 6mm
- Breakload: 900kg
- Working load: 230kg
