Flap wheels are made from aluminium oxide or nylon grain with flexible cloth backing. Flap wheels are more than 10 times faster than hand sanding and ideal for deburring and finishing the inside of holes and contours and providing excellent cut rate on low-pressure finishing operations.What are they use for Flap wheels are designed to sand pieces with contour or a profile. This can be on a door, a piece of furniture or a hobby project. Flap wheels are designed to be flexible and conform themselves to the shape being sanded.How they work Select the right flap wheel for application, the wheel inserted into a pneumatic air tool, drill or mini rotary tools. Grinding with a consistent push pull technique will produce the best results. Flap wheels are particularly effective for rust removal and general finishing.Flap Wheel Grades Coarse Fine MediumApplications Polishing Metal Work Car Body repair