This is a set of two 3/32″ thick rubber pads. These pads are 1″ by roughly 4″. The black 70 durometer pad (about as hard as a tire / typical grinding wheel) through 400 grit. I then use the white 55 durometer pad (around an eraser hardness) to give me a little more forgiveness at the 600 higher grits. Once the adhesive on your rubber pad breaks down, you can remove the adhesive with acetone and superglue the rubber pad on the stick. Once this is done, you will need to grind the rubber off the stick.