Single swivel ball bearing block with shackle. Very compact, used on small boats, cruisers and keel boats for vang, spinnaker and control line applications. Delrin® cheeks, sheave and ball bearings. Stainless steel (AISI 316) load straps.

Specification single block:
Sheave diameter: 38 mm.
Maximum line size: 10 mm.
Overall height: 64 mm.
Weight: 45 gr.
Breaking load: 800 kg.
Maximum working load: 230 kg.