Please note: The color of the product we send is the color of the first picture, and the specification and quantity are sent according to the quantity and specification described in the title. If you need to change the color or style, you must contact us within 12 hours after placing the order. Our Product: 50 Pcs/Box 2.5V Miniature Mini Bulb Screw Light Physics Experiment Model Student Teaching Specification: Voltage: 2.5V Socket: E10 Miniature Screw Package Quantity: 50 Product Features: 1. Mainly used in primary and secondary school electrical experiments. 2. These E10 Miniature Screw Socket Bulbs have a variety of uses. Compatible with many power tools and use on experiments. 3. This product is of good quality, strong light, durable, is primary school science, secondary school physics laboratory, students' home laboratory necessary electrical supplies. Package Contents: 1 x 50 Pcs/Set Mini Bulbs Note: Since the model and display effect of the monitor may be different, there may be slight color differences, and the size is measured manually, there may be an error of 1-2 cm, please understand.