3M 28473, Roloc D/F Cool Running Disc Pad TR, 4 in x 5/8-11 Internal, FIN, 7000144107 
3M 5681, Disc Pad Holder 915, 5 in x 1/8 in x 3/8 in M14-2.0 Internal, 7000028500 
Insize 4644-1N8, NPT THREAD PLUG GAGE, 3-1/2x8NPT, 6928640346927
$670.65
NPT THREAD PLUG GAGE, 3-1/2x8NPT
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