Feature: 2 Inch Quick Change Sanding Discs made with premium Aluminium Oxide abrasive grains featuring Active Grinding Aid which prevents loading and reduces heat buildup. Quick change disc has unique safety torque screw, strong wear resistance and fast grinding force. Aluminium Oxide corundum abrasive grain has high abrasion resistance and hardness, and the surface is attached with thermal and blocking resistant coating, which can improve the grinding efficiency and service life. 2 Inch Quick Change Sanding Discs can meet the requirement of 23000Max. Rpm. Quick change disc Can Used for grinding welding seam and smoothing surface. Applied Range: 2 Inch Quick Change Sanding Discs Can grind high-quality metals, such as shipbuilding, car building, aviation, machinery and so on. All the abrasive cloth uses heavy cloth base, and attaches a high toughness cotton backing cloth on the back of the abrasive cloth, so that the abrasive dish is more elastic and suitable for plane and side grinding, and can also increase the plastic links on the back. Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Material: sandpaper colour: As shown Package Contents: 50 x sandpaper 36-240 grit grinding wheel set (36, 60, 80, 120, 240, 10 pieces each) 1 x pallet 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.