Dynabrade 94521 Muffler Base 
Insize 3220-1, INSIDE MICROMETER, .2-1.2″, 6928640328541
$116.97
Graduation .001″
Ratchet stop.
Carbide measuring faces.
Optional accessary: setting ring (part no. 6313), micrometer stand and clamp (part no. 6301 and 6301-1).
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