3M 10120, Synthetic Steel Wool Pads, 10120NA, #000 Extra Fine, 7000126149 
Insize 4608-31, FEELER GAGE, .0015″~.035″, 6928640350771
$11.44
.010″ is made of brass, others are made of hardened alloy steel.
Each blade is marked with inch/metric size.
32 Leaves from .0015″ to .035″
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Insize 6140, DEPTH BASE ATTACHMENT, suitable for calipers with beam width (w) .630″, 6928640303579
$24.78