3M 55694, Stikit Film Disc w/Tab 375L, P180, 5 in x NH, Die 500X, 7100106554, 250 per case 
Insize 4131-1A2, AMERICAN STANDARD THREAD PLUG GAGE, 1/2-20UNF, 6928640359026
$101.38
Class 2B.
Standard ANSI/ASME B1.2
Supplied with Go and No-Go gages together
Supplied with manufacturer inspection certificate.
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