Paula,

I have K's Creation Perfect Tension Bars for my scroll rods. These are
nice as you can release the Tension on your work easily. I have one set
of original wood side bars and 2 sets of the Elite. I love them and no
affiliation. You can order them directly from K's if you need to.

http://www.kscreations.com/acc_perfecttension.htm

HTH Bobbie V.