3M 20279, Disc Pad Holder 947TH, 7 in x 1 in x 5/8-11 Internal Black T Hook, 7000118602 
3M 45093, Roloc Disc Pad TR, Extra Hard 3 in 1/4-20 Internal, 7000045285 
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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Insize 0010-A35, SOUND LEVEL METER, 35dB~130dB, 6974029777004
$170.80