1、Product Information: Trailer coupler pin size is 5/16inx2‑3/4in(7.85mmx70mm), suitable for quick locking applications in most situations. 2、Features: Shaft locking pins provide quick latching and added clearance, which are sturdy and easy to use and won't come loose during use. 3、Application: Widely used in table saws, gardening, agriculture, trucks, boats and canopy components, trailers, satellite dishes, gazebos, plows, mowers and boom sprayers, tractors, etc. 4、Performance: This coupler safety pin provides a reliable solution for keeping your trailer coupler latch engaged with the trailer ball, and the retainer clip ensures the pin will not vibrate or rattle. 5、Advantages: Square safety coupler pin is made of galvanized iron material, high strength and not easy to break, suitable for long term outdoor use. 10 x Trailer Coupler Pin Item Type: Trailer Coupler PinMaterial: Galvanized ironSize: 5/16inx2‑3/4in( 7.85mmx70mm)Effective Length: Approx: 70mm/ 2.75inProduct Color: SilverApplicable: trailer, boat, truck, agricultural and other multi purpose use