Introducing our patented new combination type heavy-duty steel trailer coupler lock, the ZC2021. This adjustable universal trailer ball tow hitch lock provides maximum security for your trailer, preventing thieves from disconnecting the coupler from the ball hitch. With its keyless design, you'll never have to worry about losing the key or fumbling with a lock. Our product is manufactured from high-quality steel material, ensuring its durability and longevity. As a factory, we take pride in producing high-quality and reliable products that meet the needs of our customers. Trust our expertise and invest in the ZC2021 for your peace of mind.