Added a hole and clip to anti rattle hitch pin for extra safety - never worry about losing the if the locking system gets lost or . Simple push-to-lock and 1/4 key turns to unlock mechanism. Rubber for extra protection against dirt and grime. Features - Color: Silver. - Material: Steel. - Size: 19.50 x 3.00 x 3.00cm/ 7.66 x 1.18 x 1.18 inch. - As long as you couple these two parts with the hitch and give them a push, they will be automatically locked. - This is because this lock has a push to lock mechanism that makes this product extremely easy to use. - It does an incredible jobs at reducing the risk of rust and corrosion by being made from weather resistant material. - The pin lock made of heavy-duty steel is durably made and does so without being outrageously heavy. - The pin fits most receivers of cargo carrier, bike rack tray, hitch ball mount, boat trailer truck, and RV. Package list: 1 x trailer hitch