The Ronstan Series 45 Stand-Up Core Block is designed for high performance in both cruising and racing environments. Equipped with a unique 2-stage bearing system, this block effectively handles dynamic and static loads, ensuring smooth operation while minimizing friction. Its robust construction features acetal sheaves, alloy cheeks, and stainless steel components for maximum durability and longevity. Ideal for mainsheet, halyard, and spinnaker sheet applications, this block is perfect for boats up to 10 meters (33 feet) in length.
Ronstan RF44140 Series 45 Swiveling Core Block - 10M Applications