Sturdy and durable material: Our trailer coupler padlock is made of zinc alloy, with a black coating on the surface to prevent corrosion. The internal components are stainless steel and resistant to rust, ensuring long-lasting strength and durability. This reliable tool is designed for extended use. Easy to operate: This padlock-style trailer tongue lock is simple to install and remove. It features a 1/4 turn lock mechanism for quick and convenient locking and unlocking as needed. Portable size: The lock pin has a 1/4 inch diameter and an effective length of 3/4 inch. Its compact design allows for easy carrying and storage, fitting conveniently in a pocket or vehicle. Please verify the required pin dimensions and length before purchase. Instructions: Each lock comes with 2 keys for added convenience. To unlock, insert the key and turn 5 to 7 times. Align the pin with the keyhole and turn 5 to 7 times to lock securely. Wide application: Provides added security for campers, boats, and trailers by securing the coupler on the trailer tongue. Can also be used to secure trailer door latches, cargo boxes, and other types of doors. Easy to store: Compact size allows for convenient storage in a pocket or vehicle. Two keys included: Each trailer tongue lock comes with two keys. Keep one as a spare in a secure location or provide it to someone trusted for emergency access. Note: Key style is randomly selected and cannot be chosen. Material: Aluminum alloy Color: Black Package Contents: 2 x Trailer lock 4 x Key Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.