Features: hexagonal in accordance with DIN 7448, diving insulation according to IEC 60900, internal square drive according to DIN 3120 / ISO 1174 with ball groove, chrome vanadium, technical data: key width (mm): 90square drive: 1 1/2 inch, diameter: 90.0 mm, function attribute 1: spark-free weight: 4490 g, total length: 1.5 mm, material: aluminium bronze, key width: 90 mm, standard: ISO 1172, decoration not included: DIN 31201.