Weigh Safe Ball Coupler Lock The Weigh Safe Ball Coupler Lock acts as the ultimate deterrent against trailer theft by blocking access to the coupler. This nearly impervious lock, featuring a dual-shank design, is easily operated via a single-sided, push-in barrel lock. The product is crafted from aircraft grade aluminum and hardened steel, ensuring durability and strength. It not only protects your trailer, but also serves as an excellent general-purpose lock, perfect for securing bike frames, mag wheels, or coupling with a chain. Features: Secure your trailer while trailer is unhitched from tow vehicle Aircraft aluminum construction and hardened steel dual shank lock Easy to use push-in lock 2 barrel style keys included Stops criminals from using trailer coupler to facilitate trailer theft Multiple off-trailer uses: bike lock, wheel lock, chain lock, etc. Ball (plate) can be flipped 180-degrees before locking (works both ways)