3M 82975, Roloc D/F Cool Running Disc Pad TR, 3 in 1/4-20 Internal, 7010309116 
Insize 2921-E150, ROTARY BORE GAGE, 3.2-5.9″, 6928640357183
$8,799.94
Rotary anvil, to measure bores with small opening
Optional accessory: 0.01mm or 0.001mm graduation dia indicators or dial comparator, setting ring
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