RONSTAN 60 mm Core Stand Up Block - Swivel, RF64140 Brand_Lewmar highly loaded systems using modern

highly loaded systems using modern line technology and reduced line diameters

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

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

preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn’t perfect

blocks use #10 fasteners sold separately

RONSTAN 60 mm Core Stand Up Block - Swivel, RF64140 Brand_Lewmar highly loaded systems using modernCore 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