TEKTON 1.3 mm Flat End Hex L-Key | KLX22013

Tight Fit with Fasteners - In order to create a reliable, tight fit with fasteners, our L-keys are slightly larger in size with narrower tolerances than most competitors that follow the ASME standards Two Measures of Tolerance Control - We measure our hex key tolerances from point-to-point and side-to-side to ensure the highest standards of dimensional accuracy and consistency 8660 Steel - We make our L-keys with 8660 nickel chromium molybdenum steel that's heat-treated to 54-58 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 Maximum Torque Strength - The maximum torque of the L-keys consistently exceeds the ASME standards for minimum torsion load and the ISO standards for minimum proof torque