Park Tool Hex wrenches made from industrial tool steel, hardened and tempered for shop use. Available in Y, L-Shape and folding versionsFold-up Hex wrench set includes small to medium hex keys for working on bikesMade from high-torque industrial steel with chamfered tips for tight tolerancesIncludes 1.5, 2, 2.5, 3, 4, 5 and 6mm hex keys