This E10 small lamp bulb is designed for educational and experimental purposes, featuring a compact and durable design. Its threaded screw base ensures secure installation, making it ideal for science projects, circuit experiments, and crafting activities. The bulb emits a steady light, enhancing visibility and precision during use. Features - Color: Multi - Material: Glass, aluminum alloy, tungsten wire - Size: 2.20 × 1.00 × 1.00 cm / 0.86 × 0.39 × 0.39 in - E10 standard interface: Designed with a universal E10 base for compatibility with various small sockets - Low voltage design: Operates at 5 V for safe use in experiments - Stable illumination: Provides consistent brightness for reliable performance in electrical experiments - Compact and portable: Small size enables easy handling and installation - Durability: Built for extended use to support uninterrupted experimentation and learning Package includes: 20 × small light bulbs