Problue Aluminum Diving Tank

-Material: Every cylinder is produced from high strength aluminum alloy 6061T6.-Thread: Standard 3/4-14 NPSM.-Regulation & Inspection: All seamless aluminum alloy compressed gas cylinders are manufactured in accordance with U.S Department of Transportation (DOT) 3AL and Transport Canada (TC) 3 ALM requirements. Every cylinder is inspected and tested by a DOT and TC authorized independent inspection agency.-Available colors: -Black -Yellow -Blue -Silver -Made in U.S.A.