Single sheave violin with becket. Small size with Derlin sheave used mainly on small boats. The cheeks and the sheave are in delrin®, the metal parts in AISI 316.

Single block features:
Diameter sheave: 57 mm.
Maximum sheet diameter: 12 mm.
Overall height: 123 mm.
Weight: 172 gr.
Breaking load: 1,450 kg.
Working load: 580 kg.