3M 02140, Fibre Disc Backup Pad, TN Quick Change , 4-1/2 in x 5/8-11 Internal, 7000045746 
3M 9450, Disc Pad Holder 917, 7 in x 5/16 in x 3/8 in 5/8-11 Internal, 7000028549 
Insize 7352-E500, LONG HANDLE, 6928640357190
$887.27
To assist deep-hole measurement.
Can be used for bore gages 2422, 2428, 2423 and 2424
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