Standard shape with medium screw base E26 , installs into all medium screw base fixtures directly, no need to worry too big or not fit for your light fixtures any more. No breakable parts and free of toxic chemicals, safe for your family and the environment.Super Bright 5000K Daylight white, Emitting over 1100Lumen with higher color rendering index , the brightness is ideal for lighting up your living room, dining room, bedroom, kitchen and anywhere needs great lighting.