Allen wrench set, 10 pc. heavy duty, extra long 9" T-Handle, metric sizes. Allen wrench set is heat treated extruded alloy steel, with black oxide finish for durability. Allen wrenches T-handle design increases turning power and provides a sure comfortable grip. Plasti-cote handles have size stamped on each allen wrench. All wrenches in the set are the same 9" length. Allen wrench sizes: 2mm, 2.5mm, 3mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 8mm, and 10mm. Shipping weight - 3 lbs.