Helvie® Natural Wood Box KnivesThe Helvie Natural Wood Box Knives come in four sizes. Knifes come in a natural wood of our choosing. The box knife #1 is approximately 1 5 8 in length, 3 4" wide, and . 035" (. 889mm) thick. The box knife #2 is approximately 1 5 8 in length, 5 8" wide, and . 035" (. 889mm) thick. The box knife #3 is approximately 1 1 2 in length, 1 2" wide, and . 035" (. 889mm) thick. The box knife #4 is approximately 1 1 4 in length, 3 8" wide, and . 035" (. 889mm)