Feature:1. This 3mm diode lamp holder protects the LED lamp and makes it stand upright on the PC board to make the height uniform.2. The light‑emmiting diode holder protects the lamp pin from bending, cutting, or short circuit.3. This concave LED lamp holder is made of high‑quality materials and is resistant to high temperatures.4. These LED lamp holders have a high fire rating and are suitable for 3mm LED lights.5. The diode lamp holder is made of brass material, which has excellent thermal conductivity and corrosion resistance. Specification:Item Type: 3mm Diode Lamp HolderMaterial: BrassModel: F3 concave brass holderFire Rating: 94V-2/94V-0Working Temperature: -20℃-120℃Suitable for 3mm LED lightsSize: Approx. 3mm / 0.1inPackage List:20 x LED Holder Shell20 x Gasket20 x Nut20 x Fixed Holder