3M 65489, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc DUH5120TRI-10I, 5 inch UH, 120, 7100202873, 10 per pack 
Insize 4830-E, WELDING GAGE, 6928640330131
$40.98
Graduation: 1/128″
Made of stainless steel.
Stain chrome plated reading surface.
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