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I'm not sure about number of layers; I'll re-slice the .STL later today and check. But, I can tell you that layer thicknesses of 0.1 and 0.15 will work well. Also, they are supposed to be easy to bend.

EDIT: The actual "blade" part is 3 layers thick, while the "pin", or "nipple" is 13 layers thick. This is assuming your printer is set to 0.15mm thick layers.