The Wiha International 36449 Wrenches set, hexagon keys with 11 pieces is comprised of nickel plated material for superior strength and rust resistance. The set contains a selection of sizes, including 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm and 11mm sizes, to cover a wide range of fastening and repair needs. The wrenches are designed with a specialized chrome finish for corrosion resistance and optimal performance. The handles feature peak-performance grip zones for superior precision and comfort during use.