Features:* Foam design follows contours for a better finish.* Add support to the pad pad for better abrasive cutting and closer edge sanding.* Effortlessly applies between sanding discs and pads for quick changes.* Hole configurations help clean dust from the work surface, increasing disc life.* Reduce orbital sanding tool vibration for best results. Specifications:* Material: Sponge* Color: Black (As Pictures Show)* Diameter: 150mm/6" (Approx.)* Total Thickness: 11mm (Approx.)* Foam Thickness: 10mm (Approx.)* Number of Holes: 17 holes* Quantity: 2pcs Package content: 2 * interface pads Notes: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual deviation measurement for data.