This authentic manufacturer-supplied non-skid pad is specially designed for use with Senco auto-feed screwdrivers. It is used to prevent the pushing lever from denting the material. Because this pad receives so much abuse it is a good idea to keep a few of them on hand in case it wears out or gets lost. Please note, this high-quality non-...Read moreskid pad is sold individually. Replacing it is a simple task that does not require any special tools. Refer to the owner's manual for the correct application.