Pro-Lifts Wheel Chock holds vehicles securely in place, keeping you and your work area safe. Heavy-duty, steel-gauged construction delivers strength and durability. Collapsible design for convenient storage. Set up: 4.6L x 3.6W x 3.4H. Wt: 1.8 lbs. each. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Wheel Chocks.