Acc. to DIN 3113, Form A, ISO 3318, ISO 7738, Chrome-vanadium steel 31CrV3, chrome-plated, Carefully forged and professionally machined, Slim jaw and jaw walls make this spanner lighter overall, Overloading indicated by deformation, Secure grip thanks to hollow shaft - very ergonomic and handy, Glare-free look due to matt chrome, Carefully forged and pr