RONSTAN 60 mm Core Stand Up Block - Swivel, RF64140 Brand_Lewmar Durable construction ensures reliable performance

Durable construction ensures reliable performance in sailing applications

highly loaded systems using modern line technology and reduced line diameters

these blocks feature 316 stainless steel cheeks for strength and superior corrosion resistance

they allow for multiple lines to be adjusted with a single winch

the soft resilient cheeks reduce clatter and protect gelcoat while the snap shackle attachment provides quick and easy attachment with optional trunnion articulation

RONSTAN 60 mm Core Stand Up Block - Swivel, RF64140 Brand_Lewmar Durable construction ensures reliable performanceCore Blocks is a true all around solution. For reliability and long service life, these blocks are the right choice for sheets, halyards, and control line applications for cruising and racing. Universal Bearing: A tuned two stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Stage 1: Under moderate loads, Acetal ball