COOLWEST E17 to E12 Light Socket, Bulb Base Adapter Converter, Convert your E12 Bulb Base to fit E17 Socket, Light Bulb Socket, Pack of 6 Units Package: 6pcs of E17 to E12 Socket Adapters Easy to install. Simply screw the socket adapter into E17 type socket, and then screw in an E12 bulb Works with incandescent, CFL (Energy Efficient) bulbs and LED bulbs Volatage : Suit for All Voltage Ac 85-240V,VO Fireproof Grade Dimensions: 0.8 x 0.7 inch / 2.1 x 1.8 cm (L x Dia)