3M 65487, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc DUH560TRI-10I, 5 inch UH, 60, 7100202879, 10 per pack 
Insize 4120-3D5N, METRIC THREAD RING GAGE, NO GO, M3.5×0.6, 6928640341694
$60.31
Go and No-Go gages are supplied separately.
Class 6g.
Standard ISO1502.
Supplied with manufacturer inspection certificate.
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