[High Performance] 75 pieces of fine / medium / coarse quick change discs with special fiber as the base and zirconia as the grinding particle, it shows excellent performance on any kind of surface. [Quick Change and Stable] safe torque on the quick change grinding disc is spirally connected to the holder, leveling the whole sandpaper and providing steady and accurate surface grinding, stable work on die grinder without no falling off. [Completely Safe] Sanding discs with special fiber as the base is characterized by the open 3D structure that the traditional grinding wheel does not have. With good elasticity and plasticity, the discs are suitable for objects of different shapes. heat dissipation can prevent the grinding disc from collapsing or deforming for overheating. [Long-term Sharpness] Zirconia with high hardness, high brittleness and wear resistance ensures that this sanding disc forms no irregular fracture, edges or corners during grinding, keeping sharp for a long time. Compared with alumina grinding disc, this grinding disc has a service life. [Widely Used] The sanding disc is suitable for plastic, stainless steel, alloy, iron, non-ferrous materials and other materials. The high-hardness durable grinding disc is suitable for the surface finishing, deburring, polishing and other processing in shipbuilding, repair, aviation, machinery, automobile sheet metal coating, metal stamping, die casting, instruments and meters, textile machinery, equipment parts, tools, hardware, water heating equipment, golf head and electric vacuum. size:2 inch(50mm) Material:Zirconia colour:blue Package Contents: 75 x Quick Change Disc(36 mesh, 60 mesh, 80 mesh) 1 x Quick change Disc Pad Only the above package content, other products are not included. Note: Light 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.