Droplet Mini Light Bulb Holder For Science Project With Diameter 1.18 Inch (Pack of 50) is an ideal part for those looking for a simple solution to energy needs for a project or early circuitry work. It can easily be mounted onto a board and wires soldered onto the terminals, making it easy to illuminate your project. The body has two screw holes so that it can be easily mounted to any surface with screws. This kit includes 50 of these light bulb holders in a resealable bag and is great value for money.