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Holt Marine Organic Fiddle Swivel Block 57mm
Holt's range of composite organic blocks.
The Organic fiddle swivel block is an original concept that combines composite cheeks with aluminium axle and delrin sheave and balls. This gives near zero friction and heat resistance allowing maximum performance in race boats up to 32ft.
Working load 300kg. Breaking load 600kg. Rope Diameter 5-12mm. Sheave diameter 57mm. Weight 124g.