3M 65488, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc, DUH5100TRI-10I, 5 inch UH, 100, 7100202876, 10 per pack 
Insize 6208-80E, UNIVERSAL MAGNETIC STAND, 6928640329784
$72.44
For electronic/dial indicators and dial test indicators.
Magnetic Force: 176lbf
Applicable Holding Stem: 3/8″ DIA
With fine adjustment and dovetail groove
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