The A2159 features our patented dynamic bearing technology, which comprises of high-quality stainless steel ball bearings running on stainless steel rails. providing unsurpassed performance under load. The A2159 features a custom fairlead which has been designed to allow easy cleating of the mainsheet when pulled from the trapeze. It also gives minimal friction, to ensure you can play the mainsheet harder for longer. The cleat height is easily adjustable, just undo the allen key bolt, and can be set at 3 positions that offer a maximum range of 25 degrees adjustment. The A2159 also features a removable becket pin for customisation of purchase system or easy removal of a spliced line (40mm block not included). The A2159 is an ideal choice for Catamaran mainsheet systems or yacht backstays. For quick release, we recommend replacing the standard screw shackle with the WD-2293 snap shackle.