With the Facom DM.JL, you install and remove plastic locking rings on fuel senders and fuel pumps without damaging delicate collars or the fuel tank. Its diaphragm mechanism lets you smoothly adjust the opening capacity from 88 to 170 mm, ensuring an even and secure grip on various retaining rings. Thanks to its compact design and light weight of 200 g, you work comfortably and with full control in tight spaces, such as under vehicle seats. This practical tool replaces improvised methods with a reliable solution for professional fuel system maintenance.