Kinik 60292859 Flap Disc 310 No.40 (A40), 4 Inches. 

Made from high quality German sandpaper, good polishing, fast polishing, lots of work. 

• Hard backed sanding disc for removing weld marks, removing sharp fins, smoothing the surface and finishing the surface in the final step.
• Made from high-quality German sandpaper, very sharp, can quickly grind the workpiece.
• Can be used with steel, stainless steel, fiberglass and wooden furniture.
• Fast grind, get a lot of work, suitable for professional technicians.
• Max Speed 80 m/s
• 15,300 RPM.
• Sandpaper resolution No. 40
• Size 4 inches.