This universal trailer ball coupler lock is designed to protect your trailer from theft. It's steel construction and weather resistant painted coating means it's the last trailer lock you'll ever need to buy! Includes two keyed alike keys and is adjustable to any trailer's hitch ball coupler. Strong Steel Design is Painted to Resist Rust Push-down Clamp Design Clicks Each Time It's Pushed Down for an Extra Secure Fit Designed to secure your trailer coupler from being hitched up and taken Two Keys Included