Professional Allen keys for commercial or occasional use Metric Allen / hex keys Manufactured from chrome vanadium steel for strength and durability Satin chrome plated finish for corrosion resistance Extra long allen hex keys for access into restricted areas Surface specially treated to prolong life SET INCLUDES THE FOLLOWING 1. 1.5mm allen key - total length 90mm 2. 2mm allen key - total length 105mm 3. 2.5mm allen key - total length 115mm 4. 3mm allen key - total length 125mm 5. 4mm allen key - total length 145mm 6. 5mm allen key - total length 160mm 7. 6mm allen key - total length 180mm 8. 8mm allen key - total length 200mm 9. 10mm allen key - total length 230mm Comes in a plastic container for easy storage and transportation Each one is individually marked with the correct sizes for easy finding and replacement