[60Pcs Sanding Discs Set]:Comes with discs of two inches in size and is designed for quick change sanding. [1 or 4Inch holders]:Can be used with a die grinder to provide a great surface preparation and general grinding. [Variety Grits]:Includes both coarse and fine, so can tackle any project. [Standard Aluminum Oxide Grain]:Provides aggressive material removal. [Semi-Open Coat Construction]:Resists clogging and loading, perfect for a wide range of sanding, deburring and grinding applications. Quick change disc has unique safety torque screw, strong wear resistance and fast grinding force. Colour:As Shown Material:Aluminum oxide Size:2 inches (approx. 5.1 cm) Package Contents: 25 x Aluminium Oxide discs 15 x Nylon SiC sanding discs 15 x Zirconium Oxide discs 2 x Black Strip discs 2 x Compressed Wool discs 1 x 1 or 4inch shank holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.