American Sanders – Clarke – Clutch Plate – 3 Hole Style #466616. 5-1/4 inch diameter – old style plate. NOTE – Not for replacement for the 6 hole 9200 plate – that’s larger and has 6 screw holes. This clutch plate is used mostly for the 16″ American Sanders – Clarke Sandpaper Assemble #460215 — also on many old style brushes