Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor 
Insize 3229-12, TUBULAR INSIDE MICROMETER, 11-12″, 6928640328862
$203.91
Graduation .001″
Carbide measuring faces.
11 to 12″ Range
Accuracy: .00036″
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