Professional Allen hex keys for commercial or occasional use Manufactured from chrome vanadium steel and treated for strength and durability Black oxide finish for rust and corrosion resistance Metric and imperial Allen hex keys SAE / MM sizes Extra long Allen keys for access into tight awkward areas 15 x AF / Imperial Allen keys in long format 15 x METRIC Allen Keys in short format The case is fully marked so the sizes are easy to find and can be done so quickly SET INCLUDES THE FOLLOWING SIZES • 15 X IMPERIAL SIZES - 0.028 / 0.035 / 0.050 / 1/16 / 5/64 / 3/32 / 7/64 / 1/8 / 9/64 / 5/32 / 3/16 / 7/32 / 1/4 / 5/16 / 3/8 • 15 X METRIC SIZES - 0.7mm / 0.9mm / 1.3mm / 1.5mm / 2mm / 2.5mm / 3mm / 4mm / 4.5mm / 5mm / 5.5mm / 6mm / 7mm / 8mm and 10mm Supplied in a blow molded case for easy storage and transportation The case is fully marked so the sizes are easy to find and can be done so quickly