3M 80799, Scotch-Brite Combi-S Wheel 3 in x 1-3/4 in 1/4 in Shank P180 X-weight, 7000077964, 10 per case 
Insize 4771-50, SHANK RUNOUT TESTER, taper CAT50, 6940561952360
$9,368.35
Accuracy 1um
Measuring the radial runout of shanks, collets and cutting tools.
Optional accessory dial test indicator, magnetic stand.
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