Meguiar's DBP5 Professional Soft Buff DA (Dual Action) Backing Plate 5''. A Meguiar's DA Backing Plate suitable for use with the rest of the range of DA pads and discs. Smooth and even distribution of pressure is important for achieving a smooth consistent finish which is why this pad is designed for that. The outer edges have been precisely tuned for optimal disc contouring over flat and curved surfaces. Available in 5'' and 6'' versions. Fits all DA polishers with 5/16'' diameter shafts. SMOOTH MACHINE POLISHING: Meguiar’s backing plates distribute pressure evenly for smoother compounding, polishing and finishing. PROFESSIONAL PRECISION: Precisely tuned outer edges allow you to navigate the curves and contours of any vehicle with more consistency. QUICK AND EASY: Quick and easy disc changes with micro hook and loop attachment system enable you to machine polish like a pro. COMPATABILITY: Fits all DA (Dual Action) Machine Polishers that have a 5/16 Inch diameter shaft. THREE BACKING PLATE SIZES AVAILABLE: DBP3 3 Inch, DBP5 5 Inch, DBP6 6 Inch. EASY TO USE: Rotation indicator marking allows user to recognise backing plate rotation for ideal results.