Dynabrade 78501 1" x 1/2", 8-32 Female Center Thread, 60 Grit, 8-Ply, Dynacut A/O Square Pad, 100/pack 
Insize 2435-E1507, BORE GAGES, measuring depth 100″, range 2.0-5.9″, 6940561979831
$7,482.95
Applicable for .001″ or .0001″ or .00005″ graduation dial indicators.
Carbide contact point and anvil.
Optional accessory: dial indicator or dial comparator, setting ring.
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