Description
81 Piece Square Steel Gage Block Set (Grade 3/Grade AS-1) ~ +8/-4 millionth. ~ Each block has a threaded center hole. ~ Meets or exceeds U.S. Federal specification GGG – G – 15C. ~ Complete with manufacturer’s certification. ~ Made of the highest quality tool steel. ~ Surface hardness is HRC 64. ~ Complete with a sturdy fitted wooden case. +8/-4 millionth. Each block has a threaded center hole. Meets or exceeds U.S. Federal specification GGG – G – 15C. Complete with manufacturer’s certification. Made of the highest quality tool steel.
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