Standard Abrasives 701656, Cartridge RoII Mandrel, 3/16 in x 2 in x 1/4 in x 1-1/4 in x 4 in CM-18, 7010368730 
Insize 6252-B18, BALL POINT (line pipe), 18 threads per inch, 6928640383908
$89.84
Supplied in pair
For taper measuring instruments (code 2230) and pitch measuring instruments (code 2234, 2235)
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