Features: hexagonal according to DIN 3129 / ISO 2725-2, square socket according to DIN 3121 / ISO 1174, for machine operation, phosphated, chrome, molybdenum, technical data: key width (mm): 39square drive, 1 inch diameter, 54 mm, weight: 1102 g, total length L: 90.0 mm, material: finest chrome, molybdenum, steel key width: 23 mm, standard: not ISO 64, DIN 312, depth included.