ABI Socket Extender from E26 TO E26 - Extends 1.5 inches This screw in base extension adapter accepts standard E26/E27 light bulb sockets and extends the base of the bulb by 1.5 inches. Extenders are the ideal solution for bulbs with wide bases that need a little extra room. For use with LED and CFL bulbs only. Base Type:E26/E27 Extends by:1.5 in. Total item length:2.5 in. Not for use with incandescent bulbs