Dynabrade 77762 4-1/2" Dia. x 7/8" Center Hole, 40 Grit, Type 27, Ceramic DynaCut Flap Disc, 10/pack 
Insize 6226-60, DIAL INDICATOR STANDS (NON-MAGNETIC), 6940561970104
$155.97
Applicable holding stem 3/8″ DIA, 8mm, 4mm
With fine adjustment
Hardend base
Suitable for granite surface plates or cast iron surface plates
For digital/digital indicators and dial test indicators
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