TowSmart Universal Coupler Lock is designed to provide reliable protection against trailer theft when your trailer is unhitched from your vehicle. This universal lock features a ratchet design with six locking positions, allowing it to work with a variety of coupler sizes including 1-7/8", 2", and 2-5/16". Crafted from heavy-duty cast steel, it durability and strength, while the weather-resistant zinc finish helps prevent rust and extends the lock's lifespan. The advanced locking mechanism is engineered to resist picking and prying, ensuring your trailer remains secure. This lock is an essential accessory for trailer owners seeking peace of mind when their trailer is unattended. Model Number: 72783