DescriptionThe physics experiment use lamp bulbs are a great helper for students to learn electronic science, can effectively improve their hands-on and thinking ability, creativity, and awareness of electricity. Easy to operate, good workmanship for safe use, a good electrical circuit education tool.Features-Color:Assorted.-Material: Glass.-Size: About2.30X1.00X1.00cm/ 0.90X0.39X0.39in.-Rated voltage: 2.5V.-Rated current: 0.3A.-Rated power: 0.75W. - Constructed by using glass material, ensures it safety and can use it with confidence. -Great for electrical experiments and DIY projects, easy to install and remove, simple to use. -It saves space and is easy to store, which will not take up much space. -The tiny lamp bulb is great and wonderful helper for students to learn electronic science. -Special design and it is in fine craftsmanship. It is the best replacement for your old, broken one.