There are 5 kinds of high-quality grinding wheels: thin, medium and coarse, which can meet all your regular polishing needs. The abrasive disc is made of high quality materials, with high wear resistance and fast grinding force. The open nylon mesh structure has better elasticity and plasticity, suitable for various shapes of objects. The sanding disc is based on fibers as a with abrasive particles, which is more elastic and plastic, suitable for objects of different shapes, and can work normally even on solid surfaces. Quickly dissipate heat, avoid overheating deformation or discoloration. colour:Red+blue+green+brown+khaki Material:Nylon+silicone+plastic Package Contents: 10 x red 2-inch grinding discs 10 x blue 2-inch grinding discs 10 x green 2-inch grinding discs 10 x brown 2-inch grinding discs 10 x khaki 2-inch grinding discs 1 x bracket 0.64 cm Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.