●Fit for bimini tops, boat stops and support rods, deck hinges, etc., also for ship brackets, stainless steel pipe clamps, ship equipment, etc. ●Made of 316 stainless steel, it is resistant to seawater corrosion and durable. ●Sliding spring and drop cams for easy switching to biminis of different sizes. ●The release pin is 40 mm / 1.57 inches long (without ring), 6 mm / 0.24 inches diameter and the inner diameter of the ring is 24 mm / 0.94 inches. ●The package contains 6 quick release pins with round metal rings.