"The Ironton Jockey Wheel Chock is a durable, high impact polymer dock chock that reduces the risk of trailer roll. Sold individually. Material Polypropylene, Includes qty. 1, Height in. 1 3/8, Length in. 8. Heavy-duty mountable chock fits most standard trailer wheels 8 in. dia. x 1 3/8 in. H"
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