PRECISION BLOCK SETS-2PCS/SET W. 1 Hole or Without hole

MADE OF HARDENED STEEL.   56 TO 60 RC PRECISION GROUND ON ALL SIX TO 0.0003” SQUARENESS PER INCH   IN FITTED CASE SIZE WITHIN +/- 0.0002”   FLATNESS 0.0002” PARALLELISM 0.0002”       NAME SIZE PART NO PRICE 1-2-3 BLOCK SET WITH 1 HOLE 1X2X3” 701-1-O   $19.00   1-2-3 BLOCK SET WITHOUT HOLE 1X2X3”   701-N-O $19.00