Right from BVM. They are made to order but I know they make 2 sizes and want to be sure I got the right ones. They have been shipped and will be here on Wednesday so I will measure them as soon as I get them. the 1/5 .8 PNP f-86 is made from Bob's original molds so these tanks were actually built for that model. but again they also offer tanks for the 63 inch version I want to make sure I get the right ones.