3M 45100, Roloc Disc Pad TR, Hard 1-1/2 in 1/4-20 Internal, 7000045286 
Insize 4131-3B1, AMERICAN STANDARD THREAD PLUG GAGE, 3/4-10UNC, 6928640359064
$141.24
Class 2B.
Standard ANSI/ASME B1.2
Supplied with Go and No-Go gages together
Supplied with manufacturer inspection certificate.
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