エステス 303086 BT-50 ボディー チューブ (3本入り)

do they fit a B6-4 engine

Would these be good to roll tablecloths on

I'm looking for something that is sturdier than a paper towel roll but otherwise the same (except for length, which i can cut). i'm confused by the dimensions - 17.9 x 5 x 1.1 inches - i'm assuming they are 17.9 inches long and 1.1 inches in diameter but can't figure out what the "5" in the dimension relates to. are t…

how many tubes per pack?