Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KT3070-1 ITEM 1 found under Cylinder Assembly Air Diving Equ by The Entwistle Company. The National Stock Number assigned to this part is 4220012148998, and the Federal Supply Class is 4220 Marine Lifesaving And Diving Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like KT3070-1 ITEM 1.