Black powder coated for rust and corrosion resistance. Very useful set includes long series AF and Standard Series Metric Allen / Hex Keys. As typical on Allen key one side is short (for when torque is needed) and one side is long (access to hard to reach areas). SET Includes; : Metric; 1.27mm, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm and 10mm. AF; 0.05, 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4" & 3/8". Complete in PVC roll for easy storage / transportation and easy finding.