Dimmer light socket internal unit - Replacement dimmable interior cardboard insulator sleeve INTERNAL UNIT ONLY! This listing does not include a brass socket shell! We do sell complete dimmable sockets in our store. item number: 121280074495 150W Full Range Dimmer With Ivory Knob And Paper Liner Compatible with most brass shell dimmable light sockets, including (but not limited to) Satco and SunLite brand. The plastic knob is removable, and can be replaced with dimmer-style brass knobs, like those that come on our - BRAND NEW, UNUSED ITEM! - Medium E26 Standard Base - Dimensions: 1.215" diameter, 2.100" height (the knob is about 0.695" from the bottom) - UL Listed - Rated for up to 150 Watts / 120 Volts - Marked as Incandescent Bulbs only, but a CFL or LED that is labeled "Dimmable" should also work in these. - Only rated for use on 120 VOLTS (North American standard household voltage)! We have not tested these on 220/240 volts as found internationally. - Interior Mechanism With 2 Screw Terminals (hot and neutral)