Angle key wrench set in folding holder, hexagon socket, inch as unit, 9 parts. Supplied = assembled. Material = finest grade chrome-vanadium steel. Finish = matt chrome plated. Conforms to = DIN ISO 2936. Feature = fully hardened. Model = hex socket. Number of parts = 9 pcs. Unit of measurement for hex key = imperial units. Product type = hex keys. Short model. DIN ISO 2936. Fully hardened. In a sturdy folding holder. Special tool steel, matt chrome plated.