Harken 57mm Quad Block Swivel, Center Becket [HSB380] Marine Plumbing & Ventilation | Washdown / Pressure Pumps Synchronized control of single or

Synchronized control of single or dual speed 12V/24V wiper systems

Drain plug: 1/4" NPT

Automatic memory retention of all user settings

ProLatch® Leader Spool Box

Ideal for low profile installation underdeck

Harken 57mm Quad Block Swivel, Center Becket [HSB380] Marine Plumbing & Ventilation | Washdown / Pressure Pumps Synchronized control of single or57mm Quad Block Swivel, Center Becket Low friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. Features: Sheave (mm) 57 mm Sheave (in) 2 1 4 in Maximum line (mm) 10 mm Maximum line (in) 7 16 in Maximum working load (kg) 1080 kg Maximum working load (lb) 2380 lb