The WC-5810 wheel chock helps prevent parked vehicles from moving, is made of 80 durometer rubber for hardness and durability, and fits many tires with a radius of up to 22.5 inches (22.5R)
The chock has a U-shaped hook for attaching an anchor chain or rope
It measures 5 x 8 x 10 inches (H x W x L)
(H is height, the vertical distance from lowest to highest point
W is width, the horizontal distance from left to right
L is length, the horizontal distance from front to back.) This chock is sold individually, but is recommended for use in pairs.