Feature:1. PREMIUM BRASS MATERIAL: The locking banana connectors are made of high quality brass material, durable, corrosion resistant, stable performance, long service life.2. WIDE APPLICATION AND COMPATIBLE: Suitable for speaker wire, AV receiver, amplifier, surround sound, banana wallboard. Can accommodate up to 7mm/0.3in of speaker internal cable3. LOCKING BANANA CONNECTORS: Double screw lock, no welding connection; Self locking design; Lock gun type.4. SUPERIOR QUALITY SOUND: Excellent sound performance, crystal clear transmission characteristics, elegant surface treatment.5. HIGH END RHODIUM PLATED PROCESS: Rhodium plated layer can protect plug body from external oxygen corrosion, rhodium plated, good contact and wear resistance.6. SUITABLE FOR MUSIC LOVERS: The locking stacking banana plug is suitable for DIY your music equipment, not only suitable for general users, but also suitable for audiophiles.Specification:Item Type: Banana PlugMaterial: BrassModel: BA1403RProcess: Rhodium PlatedUnit: 4 (2 Red + 2 Black)Fit Hole Diameter: 7mm/0.3inProduct Wiring: Welding Free Assembly Convenient, Practical Tools ScrewScope of Application: Professional Speaker Accessories.Package List:4 x Banana Plug (2 Red 2 Black)1 x Hex Screwdriver