Safety: Constructed of high-strength steel with a saw- and pry-resistant design, it effectively prevents theft of your trailer hitch or connector, ensuring the safety of your RV, truck, and other equipment. Universal Compatibility: Designed for 1/4-inch trailer hitches, it's compatible with most small trailers, RVs, boat trailers, and cargo trailer connectors. Easy Operation: Key-operated lock and unlock mechanism allows for quick installation and removal, requiring no tools, allowing for one-handed locking and unlocking, making it ideal for frequent use. Corrosion-Resistant: The is electroplated or coated for rust and corrosion resistance, extending its service life in harsh outdoor environments (such as rain, ice, and snow). Versatile Use: Besides trailers, it can also be used to secure tool boxes, warehouse doors, farm equipment, and more, offering a cost-effective, versatile lock. Package: 1 set RV trailer hitch connector