I posted about these on the thread about brake lines but they are even more useful for SLS lines for precisely the same reason, getting the line and the fitting lined up so as to prevent cross threading is usually difficult to do with just your hands, these allow you a bit of reach to get in there and move things the last couple degree's to make threading things together easier worth the $14!

"If you're going to be fooling with cars and their brake lines in the future a very worthwhile investment is a pair of tube bending pliers, luckily there is a very decent pair available at a really fair price from everyone's favorite Chinese tool store Harbor Freight $12 well spent the first time you need and use them

Tube Bending Pliers