Unique retaining system used to control the tension in the stays, which can bend the mast forward or backward. Fast pin for rapid adjustment. Features 17 offset holes calibrated at 4mm increments for fine adjustment. Reduces the risk of losing the stay when adjusting rig tension. Typically used on dinghies, catamarans and small keelboats. Marine Grade 316 stainless steel. Pin ?: 4.8 mm Increment Length: 4.0 mm . Adjustment Settings: 17 mm Adjust. Length 64.0 mm Length: 115.0 mm Weight: 65 g