Camco's RV Wheel Stop with Padlock is designed to stabilize the trailer with a single piece of equipment. This locking wheel stop with padlock secures tandem tires to prevent movement while parked or re-hitching. It fits tires 26 to 30" in diameter with tire spacing of 3-1/2 to 5-1/2". Secures tandem tires to prevent movement while parked or re-hitching Fits 26" to 30" diameter tires with tire spacing of 3-1/2" to 5-1/2" Includes padlock Easy grip handle for easy installation Lightweight and durable