Bal Standard Tire Locking Chock 28000A

Prevents trailer from rolling and provides fore and aft stabilization for tandem wheels. Steel diamond plated provides ideal gripping surface. Placed on the ground between tires, it locks wheels by applying force to both tires. Aids in trailer stabilizing and stops tire shifts. Extends from 15-1/4" to 23-1/8" Lightweight; easy to store Rust-inhibiting coating for long life Additional pressure can be applied by using the included tension bar Mfg # 28000APart # 730593