ToolUSA Metric Precision Screwdriver and Wrenches Set with Storage Case, 11 Piece Screwdrivers are all flat-head variety These are constructed for durability, and are neatly organized in their own black, plastic case Precision wrenches in this set All tool sizes are clearly marked in their custom fit carrying case These tools are hardened and have tempered carbon steel with nickel plated bodies to prevent rust