3M 45093, Roloc Disc Pad TR, Extra Hard 3 in 1/4-20 Internal, 7000045285 
Insize 4130-33, METRIC THREAD PLUG GAGE, M33x3.5, 6928640340154
$88.38
Supplied with Go and No-Go gages together.
Class 6H.
Standard ISO1502.
Supplied with manufacturer inspection certificate.
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