This listing for one (1) NOS blank 3M No. 777 mainframe computer data tape, 6250 cpi. Rescued from a science lab that is being remodeled. Has been inside in conditioned space. The lot of 10 is still shrink-wrapped. The whole lot of 10 weighs 22 pounds. Unfortunately because the tape is blank it does not qualify for media rates. Each tape weighs about 2 lb 2oz. Three will fit in a medium flat rate priority box. Five will fit in a large flat rate priority box, which is your best shipping value for dollar. i only charge for actual shipping costs so if you want multiples, I will get you the best value, including economy if you prefer, and reinvoice.