Hex Key Set 1) Made of Mild carbon steel, Cr-V steel or M2 steel, 2) Surface nickel plated or zinc plated Hex Key Set1) Made ... plated or matte finished.3) Point head to be Hex/hex, hex/ball point, torx-torx, torx-torx with hole4) Packing: full slide card, plastic holder, double ... colored plastic frame5) VPA/GS or TUV/GS approval 9pcs hex key set