Dynabrade 78590 3/8" Dia. x 1" W x 1/8" Center Hole, 60 Grit, 100/pack 
Insize 7353-6, BORE GAGE SETTER, 0-6″, 6940561911602
$812.76
Repeatability .00005″
Vertical and horizontal use
To be used with gage blocks
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