The Swivel spindle is a specialized component engineered for lever x lever mortise lock systems, specifically designed for doors with a thickness of 1-3/4". this spindle serves as the critical link that facilitates the smooth operation of lever handles on both sides of the door, allowing for synchronized movement. it measures 5.5" in total length, 0.25" in width, and 0.03" in height, ensuring a precise fit within standard mortise lock mechanisms. this part is intended for use in security and architectural hardware applications where robust mortise lock systems are installed to manage door access. the swivel design allows for independent or simultaneous operation of the levers, which is essential for the functionality of commercial and residential door hardware. by connecting the interior and exterior levers, this spindle ensures that the lock mechanism engages and disengages reliably. it is a necessary replacement or maintenance part for existing mortise lock hardware configurations, providing the structural integrity required for daily door operation in various building environments.