3M 76631, Roloc Disc 777F, TR, 3 in x NH, 36 YF-weight, 7000028339 
Insize 4112-AD123, INDIVIDUAL STEEL GAGE BLOCK, .123″, grade 0, 6928640352478
$35.18
Made of alloy steel.
Meet ASME B89.1.9.
Supplied with manufacturer inspection certificate.
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