Please contact local gas supplier(s) in your area before purchase to verify their policy on customer owned cylinders. No Return on Full or Empty cylinders due to DOT regulations associated with the transport of the cylinders. In cases where damage occurs during transit, Weldfabulous will do our best to correct the issue. Please contact us for any questions or concerns. Shipping only available to Continental US (Lower 48 States). All HP cylinders come with a 10 year hydrotest date stamped. All HP cylinders are within 2 years of stamped date. Meets DOT and/or ISO regulations.