30mm Upstand Blocks, also known as foot blocks and lead blocks are a low-profile solution for leading lines to cleats and jammers. Typically used at the base of a mast to lead the halyard from the mast base towards the cockpit or used to redirect mainsheet traveller lines up the side of a cockpit.
Dynamic bearings - Twin rows of stainless steel ball bearings running on a stainless steel axle provide superior rolling speeds and durability when compared to plastic alternatives.
