Dynabrade 94990 1/4" Female Composite-Style Coupler with 1/4" Male Plug Assembly 
Insize 3229-20, TUBULAR INSIDE MICROMETER, 19-20″, 6928640356902
$275.78
Graduation .001″
Carbide measuring faces.
19 to 20″ Range
Accuracy: .00043″
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