Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy. 
3M 04281 Scotch-Brite Surface Conditioning Belt, SC-BS, A/O Very Fine, 4 in x 132 in, 7010292398 
Insize 2124-E0425, PISTOL GRIP THREE POINTS BORE GAGE, .35-.425″, 6928640374487
$577.94
Optional accessory: electronic indicators
(part no. 2108-101EF, resolution .00005″/0.001mm),
setting rings (part no. 6313)
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Insize 6144, ACCESSORY SET FOR DIGITAL CALIPERS, 6928640380839
$83.88