36 PIECE SPACE BLOCK SET (3101-0003)

36 Piece Space Block Set Four 1/4"-28 connecting screws are included to make any length desired. Each block has an internal 1/4"-28 thread. Meets or exceeds federal specifications. Work surface is hardened to 57-60 RC. Made of precision tool steel. Individually marked. Complete in fitted case. Set includes 9 blocks that are .101 to .109 by .001", 15 blocks that are .050 to .190 by .010", 9 blocks that are .200 to 1.000 by .100", 2 blocks that are .0625" and .125" and 1 extra block that is 1.000". Shipping Weight: 2 lbs