The John Deere SA15959 is a genuine OEM shaft key designed for secure fastening in a wide range of John Deere agricultural, lawn, and utility equipment. This precision-engineered key ensures proper alignment and power transmission, preventing rotational slippage between components. With confirmed dimensions of 25.4 mm length, 4.78 mm width, and 4.78 mm height, and a weight of 0.005 kg, it meets strict John Deere quality standards for durability and performance.