For Laboratory Use - These e10 led bulb holder can be used in laboratories as well as test bulbs. It is an essential accessory in the laboratory. For School Use - If you are preparing for physics experiments on bulbs. If you need to use a light bulb. Then you must need these bulb holders. It is a practical gadget for elementary school science classroom and physics laboratory. E10 Bulb Socket BULK! - Come with 24 pieces e10 bulb holder socket. Enough quantity to meet your different daily requirement. Application - Used in old flashlight accessories lamp holders. Use for 1V-230V E10 lamps. Compatible With - These e10 socket can used on Floodlamp, DC, bulbs. Specification Product Name: E10 Bulb Socket Base Material: Metal Color: Silver Quantity: 24 Pieces Dimension: Suitable for Bulb Diameter: 10mm Height: 18mm Package Includes: 24 x E10 LED Bulbs Holder Socket