Hex Allen Keys Set (Long Pattern) Champhered Heads Proper Heat Treatment 48-52 Hrc Black Finish Specification Size(mm) Inner Box(Qty.) Outer Box(Qty.) 1.5" 25 2" 25 2.5" 25 3" 25 4" 10 5" 10 6" 5 8" 5 10" 5 1/16" 25 5/64" 25 3/32" 25 1/8" 25 5/32" 10 3/16" 10 7/32" 10 1/4" 5