Finding RV wheel locks that stop, grip, and hold wheels without causing damage can be a challenge, but the Dumble RV Supplies Locking Chock Wheel Stabilizer stops dual wheels on tandem axle trailers. Constructed of steel, the chock is stronger than typical wood chocks. Use as RV wheel chocks dual axel camper trailer wheel chocks, wheel stabilizers for travel trailers fifth wheel tripod stabilizer, or between the wheel chock for similar applications. Chock fits standard trailer tires spaced from 3 inches to 10 inches (7.6-25.4 cm) apart. Hold it in place and then turn the nut to tighten it. If it sticks when opening and closing, use lubrication. This camper wheel stabilizers package includes 1 camper accessories wheel chock, 1 ratchet wrench, 1 padlock, and a lock key. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.