Backing pad has a “velcro” style face that these pads stick to.
generally we work on one pad lasting for one panel of a shower – they can be rinsed and reused, but the harder the marking the fresher pad you want to use.
Any Restoration of existing glass does risk damage to the glass, these can be quite a firm pad, use caution.
Restoration is an attempt to save replacement of your glass.
We do not recommend these are used on anything other than shower glass.
The glass cannot be “new” again!