Composite double ball bearing block with becket. This new ball block is extremely light and strong. Used for jib and mainsheet adjustments on dinghies and small fixed keel boats. Delrin® sheave and balls. Composite cheeks, stainless steel rivets (AISI 316).

Single block features:
Diameter sheave: 57 mm.
Maximum sheet diameter: 12 mm.
Overall height: 110 mm.
Weight: 96 gr.
Breaking load: 1,080 kg.
Working load: 320 kg.