Highly efficient and energy-saving electronic ballast, easy to start up, noiseless, no flickering and long service life. Lampholder is made of fireproof material, safe and reliable. High power factor, not interfering other electrical appliances in use. Extra-thin design, lightweight and beautiful outlook, easier to install. 10W to 65W power, with single or double tubes optional, can be used in places such as deluxe offices, supermarkets and homes, etc. 24pcs/ctn.