Lake Country SDO Blue Cutting Pad 5 inchLake Country SDO Foam Pad BACKGROUND Standard Duty Orbital (SDO Foam Pad) have been designed to offer the same great engineered foams as the HDO line without the dual layer construction and are suitable for all random orbital DA polishers with a center ventilated backing plate. The center hole of the SDO Foam Pad provides a tunnel to release and dissipate heat from the foam; reducing surface temperatures making it less likely to damage the paint. SDO