Recessed rubber stoppers have a cavity in the center which creates extra reinforcement for high impact applications. These large door stops can be placed on a wall to protect it from a door handle. Recessed bumper feet are popular for music equipment, soundboards, and amplifiers. Commonly, four bumpers are placed on the bottom of large speakers and subwoofers. Customers can use the recessed hole to place a screw, nail or staple through the bumper for permanent attachment to an application. Simply peel and stick the bumper feet to your required location. These bumpers can be used everywhere and the application possibilities are endless.