Ronstan Series 20 Ball Bearing Block - Single - Loop Top Becket

The Ronstan Series 20 Ball Bearing Block in single configuration with loop top becket is a precision rigging component engineered for sailing, marine, and tactical applications where smooth load transfer and minimal friction are critical. Designed for users who demand reliability in demanding environments—from competitive racing to professional maritime operations—this block delivers the low-friction performance required to manage loads efficiently while maintaining directional control through its secure loop top attachment method.

The Ronstan Series 20 Ball Bearing Block features precision molded Acetal sheaves running on stainless steel or Torlon® ball bearings, a combination that ensures high performance with minimal maintenance in corrosive marine environments. This construction provides both high static and dynamic load capacity while remaining lightweight at just 0.1 lbs, allowing for systems that don't sacrifice strength for weight savings. The ball bearing design eliminates binding and reduces wear, extending service life even under continuous operational stress and variable load conditions.

Professionals in sailing, rigging, and marine industries benefit most from this single-block configuration, which integrates seamlessly into mainsheet systems, jib controls, and load-management rigging. The loop top becket design allows quick attachment to standing rigging, deck hardware, or tactical equipment without requiring additional fasteners. Its compact footprint—measuring 2 × 1 × 3 inches—makes it ideal for tight spacing while the stainless steel bearings provide corrosion resistance essential for saltwater applications. Whether for recreational cruising or high-performance competitive use, this block delivers the precision engineering and durability expected from Ronstan's proven rigging solutions.