Extend or retract both front and back chocks by turning the large center wing nut for a custom fit between tandem tires;Stabilizes both front and back tandem wheels;Zinc-plated steel resists rust;Diamond tread design provides a sure grip;Adjusts from 15 1/4 to 22 1/2L. 4H x 3 1/2W

• BAL 28000A Tire Lock Chock

BAL 28000A Tire Lock ChockBAL