[Variety Grits]:Includes both coarse and fine, so can tackle any project. [Standard Aluminum Oxide Grain]:Provides aggressive material removal. [1/4Inch holders]:Can be used with a die grinder to provide a great preparation and general grinding. [60Pcs Sanding Discs Set]:Comes with discs of two inches in size and is designed for quick change sanding. [Semi-Open Coat Construction]:Resists clogging and loading, perfect for a wide range of sanding, deburring and grinding applications., Weight: 0.81791499202 Pounds, Manufacturer: Jaywool