Diameter 1 [mm]: 41; Diameter 2 [mm]: 33; Weight [g]: 333; Total Length [mm]: 82; Surface: Satined Matt, Chromed; Material: Chrome Vanadium Steel; DIN/ISO: DIN 3120, ISO 1174, DIN 3124, ISO 2725-1; Bolt Head-/Nut Design: Double Hexagon; Depth [mm]: 33; Drive side (profile): Rectangle; Square Drive Tang Size [mm (inch)]: 12.5 (1/2); Spanner Size: 30.0; 920BL30