TEKTON Flat End Hex and Star L-Key Set, 41-PieceKEY91003

Includes 13-pc. flat end hex L-keys: 0. 050, 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8 in. ; 15-pc. flat end hex L-keys: 1. 3, 1. 5, 2, 2. 5, 3, 3. 5, 4, 4. 5, 5, 5. 5, 6, 7, 8, 9, 10 mm; 13-pc. star L-keys: T6, T7, T8, T9, T10, T15, T20, T25, T27, T30, T40, T45, T50; 3-pc. L-key holders: black, red, gray, 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, Clear Markings With the exception of the smallest sizes, Tekton L-key sizes are marked in two ways: with a high-visibility laser marking and a stamped marking.