Eklind imperial folding hex- allen keys x 9 in a medium metal case. The Classic Steel Fold-up sets are compact to fit most easily in your pocket. Eklind keys are American made using Eklind Alloy Steel to exceed ANSI standards. Includes 5/64 , 3/32 , 7/64 , 1/8 , 9/64 , 5/32 , 3/16 , 7/32 , 1/4" keys.