• High 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 44–50 HRC to produce tools that are hard, but not brittle • Corrosion-Resistant Finish – We coat all of our keys with a durable manganese phosphate finish that's resistant to corrosion • Clear Markings – Tekton L-key sizes are marked in two ways: with a high-visibility laser marking and a stamped marking
The Tekton 15-Piece Hex L-Key Set includes 7/16–3/4 inch and 11–19 mm L-keys. The L-keys are made from 6150 chromium vanadium steel that's heat-treated to 44–50 HRC and coated with a durable manganese phosphate finish that's resistant to corrosion. 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. The L-key sizes are marked with a high-visibility laser marking and a stamped marking.