TigerChocks 200 Series Aviation Wheel Chocks are designed for business, commercial, cargo, and military aircraft.
They feature a contoured design that fits curvature of the tire to absorb wheel squat during loading and fueling operations. These chocks are made from impact-absorbing urethane and are resistant to oils, chemicals, fuels, and hydraulic fluids used in the aviation industry.
For additional safety and convenience, TigerChocks 200 Series wheel chocks include a 3/8 in. x 24 in. (610 mm) replaceable nylon rope lanyard to connect two chocks together.
These lightweight wheel chocks also feature a molded-in, high visibility color for easy identification. They are easy to use and ideal for carrying on aircraft.
Sold as pair.
Warning: Wheel Chock User Guidelines
Good chocks. Light, nicely molded to fit around the tire. I bought two pairs: one for the C150 the other for a V35 Bonanza.
2 chocks tired together for 1 wheel. For two you wheels you would need to order quantity 2.
These do not have an application chart to reference specific aircraft, but the 172 is a standard size tire, 600-6, and these work great on 600-6 tires.