uxcell 4inch Dia Abrasive Sanding Flocking Sandpaper Disc 320 Grit 50 Pcs Main Material: Brown Corundum Abrasive; Package Content: 50(+/-2%)pcs x Sanding Disc Sandpaper Product Name: Sanding Disc Sandpaper; Weight: 167g Granularity: 320; Main Color: Rufous Battery Included: No Diameter: 100mm/4"