Flat End Hex L-Key Set with Racks, 15-Piece (7/16-3/4 in., 11-19 mm) BoltsandNuts.com The S2 steel bit is

The S2 steel bit is heat-treated to 57–63 HRC to resist shocks and maintain geometry under stress

Length Under Head: 2-3/4"

9 Hex Head Cap Screws DIN 931 / 933 Zinc

Part Number: BIT-KFDI

Length Under Head: 1-1/4"

Flat End Hex L-Key Set with Racks, 15-Piece (7/16-3/4 in., 11-19 mm) BoltsandNuts.com The S2 steel bit isHigh Leverage We designed these L keys to be longer to increase leverage when it matters Two Measures of Tolerance Control We measure our hex key tolerances in two ways, from point to point and side to side, to ensure the highest standards of dimensional accuracy and consistency 6150 Steel We make our keys with 6150 chromium vanadium steel that's heat treated to 4450 HRC to produce tools that are hard, but not brittle Corrosion Resistant Finish We