Ronstan’s new Core Block Series evolves the concept of the basic sailing block beyond the simple ball bearing design from decades ago. With class-leading performance and contemporary race-inspired styling, Core Blocks now offer sailors an attractive and affordable option appropriate for today’s refined sailboat designs.The heart of the new Core Blocks is an exclusive 2-stage bearing system housed in durable alloy cheeks. Stage one is an ultra-low friction system for moderate loads, while stage two engages when loads increase for superior high-stress performance.
Core Blocks also complement the looks of any modern sailboat. Block cheeks are shaped with precision from the highest quality alloy to maximize strength, minimize weight and allow for easy maintenance. The unique cheek design reduces rope wear by incorporating a flare at the block throat. Other great features include: removable becket pins for use with pre-spliced sheets, a fully articulating support base for the stand-up models, and a universal head system that can be locked in either of two planes, or left free to swivel.
Core Blocks are ideal for sheet blocks on cruisers or racing cruisers and are also a good choice for high static load applications like halyards and backstays. They are available in two sizes: Series 60 and Series 75, generally suitable for boats up to 14m (46 feet) depending on the application. Alloy sheave models are available for use with wire cables.
Visit Ronstan Blocks store to order the new Ronstan Core Blocks now!
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