uxcell 5/16" Thread 5" Grinding Machine Wheel Sanding Pad Product Name : Sanding Pad;Design : Single Side;Material : Metal, Abrasives , Plastic, Foam Color : Yellow, Red, White;Max. RPM : 12000 RPM Threaded Diameter : 8cm/5/16";Gasket Diameter : 24mm/0.9" Outside Diameter : 123mm/5";Pad Thickness : 10mm/0.4'' Net Weight : 106g;Package Content : 1 x Sanding Pad