3M 93949, General Purpose Sanding Sponge CP040-3PK, Single Angle, 2-7/8 in x 4-7/8 in x 1 in, Fine, 7100175194, 3/pack 
Insize 4120-39, METRIC THREAD RING GAGE, GO, M39x4, 6928640341588
$157.81
Go and No-Go gages are supplied separately.
Class 6g.
Standard ISO1502.
Supplied with manufacturer inspection certificate.
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