The foam cushioning pad and the Nylon Sticker base connection part form a great friction force, and their connection is very firm. The sponge design also effectively prevents damage to the foam cushioning. The 2 inch sanding disc pad set is made of aluminum oxide abrasive, which is strong and durable, and has good antistatic properties. It is an indispensable tool for grinding and polishing the required items. 12 different grades including 60 grit, 80 grit, 100 grit, 180 grit, 240 grit, 400 grit, 600 grit, 800 grit, 1000 grit, 1200 grit, 2000 grit and 3000 grit. 20 sheets of each sandpaper. The higher the number, the finer the granularity. These 2 inch sanding disc pads set can be used for polishing and finishing metal and non-metal, wood, rubber, leather, plastic, stone, glass and other materials. Colour:Photo Color Material:Aluminum oxide Size:50mm Package Contents: 240 x sandpaper with different specifications 2 x hook loop bases 2 x foam buffering pads 4 x 1/4inch metal shafts 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.