[Suitable for Lava Lamp] Specially designed to reflect and direct light into the base of the lava lamp to generate enough heat to trigger lava movement. [Installation Easy] Standard E14 shape bulb and lockable base work well with all regular e14 bulbs. [Size] R39 lamps are 39mm diameter surface and SES socket (E14 small screw Edison). [Application] Ideal for home and office lighting, illuminate your living room, bedroom, kitchen, garage, bathroom, study or office. The lava lamp high quality, no buzzing or buzzing, provides warm and soft light. This blub is not dimmable, please DO NOT use with a dimmer. It cannot be used in dimmers As this bulb gets hot, do not touch it when it is on and keep the product away from children, the elderly and pets.