Replacement bulb: R39 reflector shape and E17 screw base replacement bulbs for lava lamp, glitter , cabinets,and more, Application: Works great for standard small lava Good quality: High reliability, -span. R39 shape can dissipate heat evenly and hot enough to allow the lava to flow. Safe use: stable performance, safe use, energy saving and environmental protection. Voltage: 220-240V Power: 30W Base: E14 13.6mm Material:aluminum colour:Transparent Package Contents: 5 x light bulb Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.