FIT FOR 2inch 2-1/2inchTOW RECEIVERS: dogbone style trailer hitch receiver lock uses 5/8inch pin with 3-1/2inch effective length perfect for Class III/IV 2inch, 2-1/2inch hitch receiver tubes. PREMIUM MATERIAL: The trailer receiver lock uses black electrophoretic painted carbon steel, solid and hard to bend. 360 degree rotating head, easy to handle. All-weather rubber key slot cap keeps the keyhole from moisture, dust and rust. Updated tubular key hole, zinc alloy lock core. FITMENT TYPE: Use a tow receiver lock to the towing safety. hitch pin lock is compatible with hitch rack, cargo hitch tray, bike rack, hitch ball and tow rope, perfect for 2inch and 2-1/2inch receivers on trailer truck RV car boat. Colour:Photo Color Material:steel Package Contents: 1 x Lock 2 x key Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.