Brand new General Electric PY Tachometer Mounting Kit.  #8.5-.375-.500-.625.  Fits General Electric frames from 180-508 Series.  8.50" Accessory Face.  Also fits all Baldor, Powertron, US Emerson, WER, Louis Allis DC Motors and more.  Fits all 5PY - XPY - APY units.  Kit comes complete with Bracket, all mounting hardware, Coupling with 5/8 x 5/16 bores, and (3) choices of stub shafts that have a 5/8" shaft and thread sizes are:  0.375, 0.500, 0.625 so you can select the one you need for your frame size.