This miniature screw base light bulb is for various electrical experiments and physics projects. Designed with a screw base, it fits seamlessly into old-fashioned flashlights and educational instruments. Its compact size and reliable performance make it an essential tool for conducting electricity experiments and teaching basic electrical principles. Features -Color:Transparent -Material:Glass -Size:2.00X1.00X1.00cm/0.79X0.39X0.39in -Voltage and current: the 2.5v 0.3a miniature screw base light bulbs are for vintage flashlights and educational physics experiments, providing reliable and consistent performance -Screw base design: the screw base design ensures easy replacement and installation, making these bulbs userfriendly and convenient for various applications -Versatile use: ideal for physics experiments, these bulbs can also be used in camping, outdoor adventures, and home lighting, offering versatility in different scenarios -Compact and lightweight: these small electric bulbs are designed to be compact and lightweight, making them easy to carry and store without taking up much space -Educational tool: for conducting electricity experiments, these bulbs serve as an excellent educational tool for teaching and learning about electrical circuits Package list: 12 x Miniature Screw Base Light Bulbs