Standard Tire Locking Chock Model 28000A
Prevents trailer from rolling and provides fore and aft stabilization for tandem wheels. Includes a right and left hand threaded common screw drive for quick extension. Structural steel is completely zinc-coated to inhibit rust. 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.