3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894 
Insize 4131-5D1, AMERICAN STANDARD THREAD PLUG GAGE, 5/16-18UNC, 6928640358968
$87.51
Class 2B.
Standard ANSI/ASME B1.2
Supplied with Go and No-Go gages together
Supplied with manufacturer inspection certificate.
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