Experience maximum versatility with the Harken 2.00 Base For 3/8 Swivel. This stand-up base accommodates a diverse range of blocks, ensuring they remain upright, swivel effortlessly, or pivot for optimal line fairlead under load. Thanks to its innovative ball-and-socket architecture, blocks can articulate up to 45 degrees for ultimate flexibility. For those seeking high-load capabilities, the 460 and 461 Harken swivel base versions come with stainless steel reinforcement plates, designed to manage the increased load capacities of 57 mm and 75 mm Carbo blocks.