Features: These 5inch 8 hole orbital sander discs deliver than standard paper based option while maintaining consistent dust extraction efficiency. The serrated blue abrasive and heat dissipating rhombus design ensure rapid debris removal, minimizing clogging during wood, metal, or stone polishing tasks. Ideal for professional woodworkers and enthusiasts requiring clog resistant sanding solution for project and precise preparation. Perfect for refinishing furniture, smoothing automotive bodywork, or preparing concrete walls, suitable for most 5inch orbital sanders and vacuum systems. Available in 60-400 grit option, the velvet backed sanding discs provide multiple stage polishing from coarse material removal to fine finishing across woodworking shops and renovation sites. Specifications: Component:Calcined Sand Type:60#/80#/100#/120#/150#/180#/240#/320#/400# Size:Approx.125mm/4.92inch Package Includes: 100Pcs Sanding Disc note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.