Sturdy and durable material: Our trailer coupler padlock is made of zinc alloy with a black corrosion-resistant coating. The lock body is constructed from stainless steel to prevent rust and ensure long-term strength and reliability. Easy to operate: This padlock-style trailer tongue lock features simple installation and removal, with a convenient 1/4-turn locking mechanism for quick and secure operation. Portable size: Features a 1/4-inch diameter tongue lock pin with an effective length of 3/4 inch. Its compact design makes it easy to carry and store in a pocket or vehicle. Please verify your required pin dimensions before purchasing. Instructions: Each lock comes with two keys. To unlock, insert the key and turn it 5–7 times. To lock, align the pin with the keyhole and turn the key 5–7 times. Wide application: Provides added security for campers, boats, and trailers by securing the coupler on the trailer tongue. Also suitable for trailer door latches, cargo boxes, and other compatible doors. Easy to store: Compact size allows for convenient storage in a pocket, glove compartment, or tool kit. Two keys included: For convenience and backup access, two keys are provided. Keep one key in a secure, accessible location. Material: Zinc alloy with stainless steel components Color: Black Package contents: 2 × Trailer coupler padlocks 4 × Keys