TEKTON Inch/Metric/Star Folding Hex Key Wrench Set (25-Piece)

Precisely sized ends are chamfered to slide easily into fastener, reducing wear on the wrench and damage to fastener head. Rather than layers of plating, the steel surface of each wrench is directly treated with a black oxide finish. Since this finish can’t flake or chip off, it won't damage your work or diminish the precise fit in fasteners over time. For fast and sure identification of each series, inch sizes come in a gray housing, metric sizes have a red housing, and star sizes have a black housing. The contoured, round profile housing with soft grips comfortably fits in your palm and pocket. Each wrench folds in and out for use, so you don't have to worry about losing any. Easy-to-read size markings allow for fast wrench selection.