... 9X1W-Z2.Dimension: Dia.*H=115*95mm3. Base Holder: E27,E14,GU10,B22,MR164. Output Power: 9 ... Driver by independent R&D, Screws, Wires and Base Holder are perfectly united to a great job.4. ... . The same base holder with conventional E27 ,E14,GU10,MR16,B22 lamps, safe and esay to install.6 ... energy saving than the same brightness of conventional halogen and incandescent lamp, 50% than the same brightness ...