Adjustable Tank Holder for Vehicles 6-1/2 to 7-1/4 Inch Diameter FIA The solid steel plates are

The solid steel plates are usually mounted in front of the wheels to prevent objects from "riding" the tire and being thrown forward

Hydraulic controls sold separately

or dry sand

Directional

Adjustable Tank Holder for Vehicles 6-1/2 to 7-1/4 Inch Diameter FIA The solid steel plates areBuyers Products Tank Holder provides a secure location for oxygen or acetylene tanks on your work vehicle. It is constructed from corrosion resistant zinc plated steel and mounts to the interior of your vehicle. A wing nut and hinge design allows quick access. The holder is lined with a rubber gasket to eliminate friction and noise while in motion. Provides a secure location for oxygen or acetylene tanks on your work vehicle. Work Trucks Construction