Analogs of : KS TOOLS - 515.1121
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KS TOOLS 515.1121 
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Substitutes Power Socket
Bolt Head-/Nut Design: HexagonDepth: 22mmD1: 30mmD2: 30mmDIN/ISO: DIN 3121DIN/ISO: ISO 1174Drive side (profile): RectangleMaterial: Chrome-Molybdenum SteelSpanner Size: 21,0Square Drive Tang Size: 12.5 (1/2")mm (inch)Total Length: 78mmWeight: 220g