The Tank Check model 024-5002 Tank Halo is a thermoplastic rubber foot ring for standard cylinders: 20, 30, and 40 lb (5, 7.5, and 10 gal) DOT cylinders. It helps protect your car and floor surfaces from the rust and grime that can build up on cylinders. The Tank Halo also provides the space needed for a standard tank sensor and improved wireless range. A great replacement for lost aluminum spacers.
