Flap Wheel with Shaft Thickness / Diameter 50 60 80 100 125 150 200 250 300 350 20 ? ? 25 ? ? ? ? ? 30 ? ? ? ? ? ? ? ? ? 40 ? ? ? ? ? ? ? ? ? 50 ? ? ? ? ? ? ? 60 ? ? ? 70 ? ? Characters: It is radial and fan-shaped which make use of flowing adhesive to make the lamellate of abrasive-colth adhered. Application: Grind the surface of non-metal and metal. Lap the hole and surface of work-piece Grind and lap flexible contoured surface, especially and convex surface profiles.