The Master range of Siren blocks is designed for efficiency and reliability in high load applications. The blocks feature a self-lubricating acetal bushing on a high strength 316L stainless steel shaft fordurability, while the robust Lube Hardkote-Anodized aluminium cheeks brace a captive Delrin ball bearing system that reduces overall friction. The blocks are topped with a highly polished 316L stainless steel shackle and feature Master’s patented locking mechanism.
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