Medium aluminum wheel chocks for trucks. NFPA standards require Wheel
 Chocks to be mounted on fire apparatus before being placed in service 
per NFPA 1901-03. WARNING: undersized chocks may fail to restrain 
vehicle. The vehicle may either roll over or crush an undersized chock, 
possibly resulting in bodily injury or property damage.
These
 Chock feature high-tensile strength aluminum construction, large rear 
opening hand grip, and double row of rugged teeth to grip almost any 
firm surface. 
- Weight 3.5 lbs. (1.7 kg)
- 6.5"h x 11.75"l x 6"w