What is this?The threaded reducer can convert the thread to the thread. It is a common light fixtures accessory for the repairing and restoring of ceiling lamps and chandeliers, or DIY making.What will I get?Material: ; Color: ; Thread Size; Total Length:; Package Content:Are there any advantages of the product?Made of carbon steel material, smooth surface, with good appearance, and durable to use.Hollow center design, good for wire pass through it.How to use it?Easy to install, each screw can connect two different thread fittings on both end.What should I notice?Please note the thread size before buying.