3M 35831, Hookit Dust Extraction Flexible Radius Sanding Block, 178 mm x 66 mm, 7100256512 
Insize 4786-1E, CONCENTRICITY GAGE, 6928640395116
$5,416.25
Applicable inside diameter .945″ DIA~2.520″ DIA
Applicable outside diameter .079″ DIA~2.756″ DIA
Accuracy .0003″.
Optional accessory: dial test indicator.
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