The grip is snapped on over the backing on the rods. It is snapped on like a zip lock bag, you start at one end and work your way across the leaders. The grip is clear so you can see if it is catching all of the edge of the backing. The grip has a top edge so it is easy to press over the dowel rods and easy to pull up when you are finish with the quilting. Leader Grips holds the fabric taunt and smooth.