3M 49941, Roloc Disc 361F, 80 YF-weight, TSM, 3 in, Die RS300VM, 7000148151 
Insize 3229-6, TUBULAR INSIDE MICROMETER, 5-6″, 6928640328800
$130.84
Graduation .001″
Carbide measuring faces.
5 to 6″ Range
Accuracy: .00024″
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