HIGH OUTPUT: High quality G4 halogen light bulbs 20watts, ultra-high color rendering index CRI99+, 3000K warm color temperature provides very pleasant light. Halogen light bulbs are lead or mercury free, have no UV or IR radiation, and are safe for your homeENERGY-SAVING: Our G4 bulb is made of high quality tungsten wire that work safely under AC12 volts , saving the cost of frequent bulb replacementEASY INSTALLATION & WIDELY USED: DORESshop outstanding G4 T3 JC 12V 20W halogen light bulbs the double pins of the G4 base can be easily put into all standard G4 canning fixtures is an ideal choice for under cabinet puck light, chandeliersDIMMABLE: G4 bulb with a dimming function (10%-100%), wide 360° beam angle, can meet your demands for brightness,be used for dimming for traditional incandescent lamp dimmersSTANDARD SIZE: Compact length of small tube with clear glass ,diameter: 0.35 inches (8.9 mm), length: 1.21 inches (30.8 mm), base: G4 2 pins (4 mm pitch)