Gloss-it (EBP-5-PC) Evo 5" Dual Action Backing Plate for Porter-Cable 7424 Design to ensure trouble free polishing which wrap around the edge of the backing plate - never risking damage to the surface Ideal for use with 7424/G110/G220 and 5/24 male threaded dual action polishers Highly flexible design allows for very easy transitioning from flat to contoured surfaces Quick and easy pad changes The backing plate and polishing pad system will produce the highest level of paint correction and final finishing