Dynabrade 52774 3/8" Reversible Drill, .5 HP, Rear Exhaust, 950 RPM 
Insize 2128-32, BORE GAGE, 16-32″, 6974029772702
$577.07
With digital indicator, part no. 2108-10EF, range .5/12.7mm, resolution .0001″/0.002mm
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