Gear your toolbox up with this compact and portable HV Tools 7 Piece Folding Hex Key Set, ideal for any hardworking professional or amateur handyman! This handy little hex key set is primarily constructed from chrome vanadium steel, with a durable black oxide finish. Like many HV Tools, this tool is easy-to-use and easy-to-carry! The 7 hex pieces include sizes of 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, and 6mm.