.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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3M 87429, Final Finishing Pads 10199NA4PK, 3 3/4 in x 6 in x 5/8 in, Replaces 0000 Steel Wool, 7100096075, 4 pads per pack
Insize 7230, SCRIBER, 6928640320064 