Analogs of : KS TOOLS - 450.0251
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KS TOOLS 450.0251 
Substitutes
Substitutes Groove Nut Key
Drive side (profile): Male HexHeight: 310mmInner Diameter: 122mmManufacturer Restriction: BENZManufacturer Restriction: MERCEDESMaterial: Tool SteelNumber of pins: 6Outer Diameter: 139mmPin Diameter: 123,5mmPin Width: 10,4mmSpanner Size: 32Weight: 3865g