Standard Abrasives 840236, Quick Change Surface Conditioning RC Disc, A/O Very Fine, TSM, 1-1/2 in, QS150SM, 7010367286, 50/case 
Insize 3229-7, TUBULAR INSIDE MICROMETER, 6-7″, 6928640328817
$139.50
Graduation .001″
Carbide measuring faces.
6 to 7″ Range
Accuracy: .00028″
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