Stand-up bases allow a wide variety of Blokks to be held upright, swivel freely, or pivot so lines have a fairlead under load. The ball-and-socket design lets Blokks articulate up to 45 degrees and swivel freely. The 460 and 461 bases (high-load versions of the 010 and 029) have stainless steel reinforcement plates to handle the high load capacities of 57 mm and 75 mm Carbo Blokks.
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