3M 12954, Scotch-Brite Roloc Surface Conditioning Disc, TR, 4 in x NH A CRS, 12954, 7100007009, 100 per case 
Insize 2167-25, DIGITAL SNAP GAGE, 0-1″/0-25mm, 6928640315008
$276.56
Resolution .0005″/0.01mm
Accuracy ?.0012″
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