Feature●DEPENDABLE SECURITY. To help protect your trailer from theft, this trailer lock fits over the trailer tongue and is designed to prevent a trailer ball from being inserted into the trailer coupler.Fit Type: Universal Fit●EASY TO OPERATE. This trailer tongue lock has a sleek, subtle look to deter theft, and uses a simple 1/4-turn lock activation for convenient locking and unlocking as needed●VERSATILE. With a standardized channel, this trailer coupler lock fits most 2-5/16-inch and some 2-inch flat and rolled-lip trailer couplers (check dimensions)●WEATHER-RESISTANT. This trailer tongue lock is protected from the elements with its highly corrosion-resistant aluminum construction. It also features a grey powder coat finish for maximum corrosion prevention●TWO KEYS INCLUDED. For your convenience, two keys are included with this trailer tongue lock. You can keep the spare key in a discrete location for emergencies or give it to a friend for helpful accessDescription Sometimes a safety pin and coupler latch are just not enough to keep your toys safe. While CURT safety pins and coupler latches are made to keep your coupler securely latched onto your trailer ball, they are no substitute for the locking power provided by a CURT coupler lock. CURT coupler locks are designed to add security to your trailer and towing equipment. Instead of merely retaining the coupler latch mechanism, this special coupler lock is actually designed to protect your trailer from theft when it is not hitched up to your vehicle. It features a strong aluminum body that fits most 2-5/16" and some 2" flat or rolled-lip coupler and prevents a trailer ball from being inserted. This CURT coupler lock is key-operated and comes with a grey powder coat finish. All CURT coupler locks include two keys in every package. Protect your boat, your camper and even your utility trailer the right way with a CURT coupler lock.Features: Rust Resistant