3M 65491, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc DUH5220TRI-10I, 5 inch UH, 220, 7100202878, 10 per pack 
Insize 2365-055, THICKNESS GAGE, 0-.5″, 6928640329852
$250.78
Graduation .0005″
Snap Thickness Gage
Range to .5″
Accuracy: +/- .0008″
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