This is a ring for fixing the lamp holder, made of sturdy plastic materials, which can meet your long-term use needs, and it is the perfect choice for you to tightly connect the lamp holder. You deserve to have one. Features - Color: White. - Material: Plastic. - Size: 5.80X5.80X1.00cm/2.28X2.28X0.39inch. - Note: Suitable for E27 lamp holder. - The ring is light and handy, and for professional maintenance personnel, even if it is carried with them, they will not feel burdened. - The fixing ring is made of sturdy material, so it has high corrosion resistance and strong capacity, which can be used long time. - It is made of plastic material, which makes it hard to break and can maintain a fixing effect for a long time. - Convenient to use and easy to operate, replacement and installation will not be troublesome. - It can be used for a long time, and it does not take up space when it is not in use. Package list: 10 x Lamp Holder Fixing Rings