Series 20 blocks are the perfect choice for all types of dinghy control line applications. Their light weight and high load ratings make them ideal for use in powerful. efficient purchase systems for boom vangs, outhauls, cunninghams, and traveller controls.

Ball Bearing.

Max. rope diameter: 1/4"

Pin diameter: 5/32"

BL: 1540 lbs.

Price: $25.70