30W Lava Lamp Bulbs Reflector Type Bulbs R39 E14 Base Lava Lamp ··∫ .f
Lamp holder: E14 (small screw mouth) 13.6 mm. 【High Quality】The top of the reflector-type bulb is flat to fit the lava bottle, so the heat distribution is different from the round bulb, which will make the lava lamp more active.