81 Piece Square Steel Gage Block Set (Grade 3/Grade AS-1)
Meets or exceeds U.S. Federal specification GGG - G - 15C.
+8/-4 millionth.
Each block has a threaded center hole.
Complete with manufacturer's certification.
Made of the highest quality tool steel.
Surface hardness is HRC 64.
Complete with a sturdy fitted wooden case.
Shipping Weight: 12 lbs
Many metalworking products contain metals that are included in
the latest Prop 65 warning. Exposure to the elements can be
harmful. May cause cancer and reproductive harm.
