someone gave me a roll of invisigrip as a gift a few years ago- i used it on all of my rulers- my 6"x24" cutting ruler, 12 1/2" square ruler & 2 of my quilting rulers-
it works well- i've had it on my rulers for over 6 years- no problems.
not sure what you want to know about the quilting rulers-
i buy mine from the longarm dealer who sells my machine- they are fairly thick (3/8" i think-may be 1/2") one of mine has an open groove in the center of it to place the machine foot in- follows the groove to make straight lines= an second one i use along the outside of the ruler- holding the quilting machine foot against the side of the ruler.