Pb fastener pu rubber feet black and clear pb fastener bs 27 bk r 5 these rubber feet 79 x 22mm from pb fastener amp components or bumpers as they also known are semi circular domed feet fitted with an adhesive base that remain incredibly versatile and have hundreds of uses whether it be the office workplace or home these rubber feet are ideal for protecting doors and walls for instance they can prevent picture frames from moving while keeping them scratch free they can also