Series 20 Ball Bearing And High Load Blocks Hl Single Block W Loop Top 700 Swl Series 20 blocks are the perfect choice for all types of dinghy control line applications. Their light weight and high load ratings make them ideal for use in powerful, efficient purchase systems for boom vangs, outhauls, cunninghams and traveller controls. Precision molded 34 acetal sheaves for up to 14 line Grade 316 stainless steel ball bearings and 304 stainless steel load straps and head fittings UV stabilized acetal cheeks
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