For sale: Foldable/zipper Allen wrench (Hex Key Set) from the reputable American company PROTO. Brand: PROTO - Original American Made (Made in U.S.A) Model Number: J4974 System: Metric Sizes: 1.5 - 2 - 2.5 - 3 - 4 - 5 - 6 mm as shown in the picture Condition: Used with care, durable quality, ready for practical and professional use.