ISO 1711-1 and DIN 3113, material: high-performance steel alloy, jaw position 15° with a thin head for improved accessibility, ratcheting function in the end of the ring for faster work, double hexagon with dynamic drive profile ensures longer service life for the screws and nuts, 5° return angle , switch lever for quick change of direction, larger size markings on both sides for easier identification, chrome-plated micro-matt version with high-quality surface