• Replacement bulbs for FERROFLUID LAVA LAMP ONLY
• R39 Watt Reflector type bulbs
• Approximate Measurements: 2.25"L x 1.5"W(Top of Bulb)
• Base Measures Approximately 1/2"
• Specially designed to reflect and direct the light into the base of lava lamps in order to create enough heat to start the lava motion

Replacement Bulbs for ferrofluid lava lamp. 15 Watt Reflector type bulbs. Will not work on regular lava lamps, only ferrofluid based lava lamps. Ferrofluid lava lamps require less heat, therefore less watts.