New Eklind 21172 7 Pc Fold Up Metric Allen Hex Key Wrench Set Usa Made Sale Eklind 7 in 1 medium fold-up metric hex key set Size Range: 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm Sizes are clearly marked on the handle for easy identification Produced from 8650 Chrome Nickel Alloy Steel drawn to a tolerance of plus. Keys are held in any work position or angle by a flat spring in the bottom of base