Check the listing for details. 4Pcs Trailer Coupler Pin 3/16x3/16" Wire Lock Pin Shaft Locking. Condition: New. Listed at 16.25 USD. This coupler pin keeps the connection secure for safe towing and trailer carrying. Great for table saws, lawnmowers, gardening, farming, trucks, wagons tractors, trolleys, hitches, boats, kayaks, canoes, top canopy parts, trailers, satellite antennas, PTO accessories, and other locking applications.SpecificationColor: SilverMaterial: Galvanized SteelPins Diameter: 5 mm / 3/16"Pins Length: 50 mm / 2"Coil Diameter: 2.2 mm / 0.09"Inner Size: 42 x 42 mm / 1.65 x 1.65"Packing List: 4 x Trailer Safety PinAdvantageWire lock pins are made of galvanized steel, resistant to corrosion and rust, durable under all weather conditions, capable of withstanding heavy loads and repeated use not easily deformed, and provide a strong and secure connection for your trailers.