Meguiars 5" Inch Soft Buff DA Backing Plate is designed to distribute pressure evenly for optimum defect removal and finishing Precisely tuned outer edges allow you to navigate the curves and contours of any vehicle with more consistency Quick and easy disc changes with micro hook and loop attachment system Fits all DA Polishers with 5/16" diameter shaft Meguiars 5 Inch Soft Buff DA Backing Plate is designed to distribute pressure evenly and consistently for optimum defect removal and finishing. The outer edges are precisely tuned for disc contouring over both flat and curved surfaces. Meguiars DA Backing Plate also features a rotation indicator marking that allows you to recognize backing plate rotation for ideal results. Disc changes are quick and easy with a micro hook and loop attachment system. Can be used with DA polishers with a 5/16" diameter shaft.