These safety flanges are inserted into buffing wheels that do not have a center plate. Center plates allow for immediate use on a grinder but are less robust than a buff without a center plate with accompanied inserted safety flange.
These safety flanges are inserted and reusable from buffing wheel to buffing wheel. Top plate is threaded which removes the need for an additional nut for low-profile use to reduce the likelihood of scratching a hex nut into a wheel or fuel tank.
Flanges have two hole patterns on top plate to loosen or tighten with Makita or Dewalt’s tightening tools. This is used primarily when tightening or loosening the top plates