Another variation I've tried with my small stair tool is this. Throw the velcro away. Get out the Gorilla Glue. Smear it liberally over the pad driver of the tool. Then sprinkle some beach sand over the glue. Then, with a small plastic bag, or a piece of waxed paper, push the sand down into the glue. Lean the machine against a wall so the glue won't run off to one side before it fully dries. Now you have a nice rough surface that probably won't come off. Mine hasn't in over a year. Then use the Challenger stair tool pads, and one or two extra-wide rubber bands to hold the pad in place, and - voila! - a renewed stair tool. This is also my upholstery cleaning tool.

Note: I do like the Oreck Orbiter/Pro Model for large stairs.