SMART DESIGN - The hitch anti-lock is made to be effectively anti-theft with its plum blossom circular design lock core. The lock prevents the coupler latch from moving. EASY OPERATION - The hitch anti-lock is easy to use. Just need to push the tubular key to lock and unlock After hearing "click", you simply need to pull the lock head to guarantee it is working. WEATHER RESISTANT - The hitch anti-lock is equipped with weather tough seal and water tight cap protects the lock from the elements. Keeps the keyhole away from dampness, residue, and rust. PREMIUM QUALITY - The hitch anti-lock is made of solid and hard to bend electrophoretic painted carbon steel for durability and long lasting usage. This wont break or get rusty easily. FITMENT - The hitch anti-lock lock is good with hitch rack, load hitch plate, bicycle rack, hitch ball and tow rope, ideal for 2" and 2-1/2" receivers on 18 wheeler RV vehicle pontoon. color: black size: as the picture shown