Weld on shock remote reservoir mounts. The bottom edge has a radius to sit on the edge of a tube. They weld to the chassis and use hose clamps to hold a reservoir in place. Available for both 2" and 2-1/2" reservoirs. Sold as a pair. Tubing and hose clamps are sold separately. Can also be used for ignition coils, round fuel pumps, fuel filters or oil coolers.