BAL 28010  X-Chock Tire Locking Chock - Single Provides added stabilization and prevents tire shifts by applying opposing force to tandem tire applications As opposed to other chocks, the X-Chock works with the tires natural movement instead of against them Fits even the tightest of applications- retracts down to 1-3/8" and extends to 12". Rust inhibitive coating Plated ratchet wrench with comfort bumper included Provides added stabilization and prevents tire shifts by applying opposing force to tandem, tire applications As opposed to other chocks, the X-Chock works with the tires natural movement instead of against them Rust inhibitive coating Plated ratchet wrench with comfort bumper included Lightweight, easy to store