This is a genuine SAME 276590050 Ignition Switch, also known as a starter switch, designed for agricultural machinery. It features 4 operational positions and 6 electrical terminals, ensuring reliable starting and power control. The switch requires a 26mm mounting hole diameter for installation. This part is compatible with various SAME, Lamborghini, Hurlimann, and Deutz-Fahr tractor models, replacing the original OEM part number 276590050.