4"male thread backing plate for 6''foam buffing pads with YJ hook type material,Screws onto most electric, high-speed ... ideal for automobile polishing ,metal buffing and cleaning.4″sponge foams with backing ,sponge sourcing foam,automobile sponge for waxing, it can ... surface of about 5 degrees), and from time to time with water to maintain the wax head moist. ) Applicable to the ...