Large Spool Roller(s)

So you so you don't have to go running all over the place I will provide all the parts that I used. I made two large spool rollers. The bearings, rod and shaft collars and aluminum tube I ordered from the large online retailer Am*$on (Amazon), because I am lazy. You need:

(1) 8 Bearings 608ZZ 8x22x7 pre-greased
(2) 8mm shaft 30"
(3) Aluminum 6061-T6 Seamless Round Tubing, WW-T 700/6, 1" OD, 0.87" ID, 0.065" Wall,
(4) 4 or 8 8mm ID Shaft Collars

After printing the STL for either a si