Lampholder GU10 Diameter: 55 mm Height: 145 mmBulb ;Bulb(2700K-Yellow) Bulb(3000K-Daylight) Bulb(4000K-Warmwhite) Bulb(6500K-White) GU10 Diameter: 55 mm Height : 145 mmAluminum Injection BodySmart Cooling DesignElectrostatic Painted Socket and Rozance Application