Clamp-On C02 Tank Holder: Pedigo O2 Holder: P-3601. Pedigo s O2 Holder holds E-Size Oxygen Tanks and is Hospital-Grade. Stainless Steel Construction and the Pedigo O2 holder feature an adjustable height. ** Please reference item #241003-2600-09 when contacting us about this listing. Return Policy Items are sold as-is as described and pictured. Most items come with a 7 day option to return and a 30 day limited parts warranty. Feel free to call before you buy. 888-649-6497