Uxcell Round Coupling Nut M10 to M4 Adapter Screw Thread Convert Sleeve Connector Rod Bar Stud Tube Nut Silver 10 Pack

What is this? The coupling nut can connect two threaded pipe with two different thread. It is a common light fixtures accessory for the repairing and restoring of ceiling lamps and chandeliers or DIY making. Are there any advantages of the product? Made of carbon steel material smooth surface with good appearance and durable to use. Easy to use it can connect two pipes with two different threads together. How to use it? Easy to install each coupling nut can connect two thread pipes on both end. Or you can use screw on it. What should I notice? Please note the thread size before buying.