Features 1、[Durable Material] Made of high quality pure copper material, which is durable, safe, and can be used for a long time. 2、[Good Transmission Performance] The banana socket has stable performance, good transmission performance, good contact performance and anti oxidation. 3、[Gold Plated] With gold plated and nickel plated technology, exquisite workmanship and easy to use. 4、[CNC Technology] Using CNC technology, which is high accuracy, so you can use it with confidence. 5、[Widely Application] Widely used in many situations, such as electronic equipment, households, industry, etc. Specification Item Type: Banana Socket (With Nut) Model: 21.140 Material: Pure copper Application: Electrical test accessories Inner Diameter: Approx. 4mm / 0.2in Nut Thread: M6 Package List 20 x Banana Socket 20 x Nut