BLVD Hitch Receiver Pin Lock, Dogbone Trailer Receiver Lock with 5/8" Pin for Class III IV 2" and 2-1/2" Receiver, Compatible with Hitch Bike Rack Tray Ball Tow Rope for Trailer Truck Car Boat Push-to-lock design allow you to lock the tow receiver without key, after hearing "click", please pull the lock head to ensure it is working. Turn the key, the pin will pop up automatically. Take off the pin from the receiver hole, then done. The key can be removed after unlocking. BLVD hitch lock is perfect for Class III/IV 2", 2-1/2" hitch receiver tubes on trailer truck RV car boat. This dogbone style receiver lock is compatible with hitch rack, cargo hitch tray, bike rack, hitch ball and tow rope, ensure the towing safety. Features FIT FOR 2" 2-1/2" TOW RECEIVERS: CZC BLVD dogbone style trailer hitch receiver lock uses 5/8" pin with 3-1/2" effective length perfect for Class III/IV 2", 2-1/2" hitch receiver tubes. EASY OPERATE DESIGN: BLVD hitch lock adopts push-to-lock design without key, after hearing "click", you just need to pull the lock head to ensure it is working. When turn key to open the lock, pin will be pops-up automatically and comfortably. 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 away from moisture, dust and rust. Updated tubular key hole, zinc alloy lock core. FITMENT TYPE: Use a tow receiver lock to ensure the towing safety. BLVD hitch pin lock is compatible with hitch rack, cargo hitch tray, bike rack, hitch ball and tow rope, perfect for 2" and 2-1/2" receivers on trailer truck RV car boat. CLIENT SUPPORT: 30-day money-back guarantee for any reason, 12-month warranty for quality-related issues. Please feel free to contact us at first if there is any problem when you receive or use our products. We are always here to support you.