Features High quality: easy to use and install, very practical. Utility tool: can be used as LED lamp holder and isolation lamp shade. Scope of application: suitable for 5mm LED. Each set has 4 parts: base, ring, nut and plug. Easy to use: used for LED electronic and electrical experiments. Description : 5mm LED lamp holder sets light-emitting diode led light. It is easy to install and can be used as LED holder and isolated lampshade. There are 50 pcs in one bag and suitable for 5mm LED. Specifications : Base Material: Galvanized aluminum Color: Silver Thread Mount Hole Size: 8mm / 0.3"(approx.) Suitable for: 5mm LED Quantity: 50 sets/package Weight: 100g(approx.) Package includes: 50 x LED Holders Package List