84 Piece (M7-) Pin Gage Set (.917-1.000) Supplied in a plastic, sturdy, dust-proof case. Sizes are marked on the case for easy identification. Fully hardened to 60-62 RC. Finish to 10 Micron or better. Class ZZ Overall length is 2". Set is -0.0002" + 0.0000". This is a non-certified set. Shipping Weight: 40 lbs