A 4.5-inch flap disc is an abrasive tool used on an angle grinder for tasks that involve grinding, blending, stock removal, deburring, and finishing, primarily on metal.
Here is a breakdown of key information about 4.5" flap discs:
Common Uses
Weld Grinding and Blending: Removing and smoothing weld seams.
Stock Removal: Quickly removing excess material from a workpiece.
Deburring and Deflashing: Removing sharp edges and molding flash