Polifan Curve Flap Wheels, 4 1/2 in x 9/16 in, 40 Grit, 13,300 rpm

Features : Tough and aggressive � removes scale and bead from all metals | Multi-purpose � may be used as a conventional flap disc, and also for underhand applications using the top of the disc | Works faster than grinding wheels without the risk of undercutting the workpiece | Precise grinding out of fillet welds provides a superior surface finish | Smooth finish allows easy visual inspection for defects, such as porosity and inclusions | Ideal for repair applications to remove defects without damage to adjacent areas | Excellent tool life, including the radius edge of the disc