Feature:1. [Black Carbon Fiber Shell] RCA plugs black carbon fiber shell does effective external noise shielding and restores clean current. The hot end hole adopts the middle car empty design, and more natural sound.2. [Excellent Workmanship] Chrome plated plugs, chrome plated contacts transmit signals almost without loss, better signal transmission, ensuring high load capacity.3. [DIY Plug] Video cable connector is perfect for professional installers or home theater enthusiasts who want to make their own high quality RCA cables. Fit for 9mm wire diameter speaker equipment.4. [High Performance] RCA connector has high resolution, transparency and smoothness, rich details and layering, the mid frequency is thick and full, and the low frequency has good elasticity and strength.5. [Scope of Application] RCA plug adapter is suitable for signal line, coaxial line, etc., professional speaker equipment, the connection method of RCA terminal plug connector is cold soldering.Specification:Item Type: RCA PlugsConductor Material: BrassSurface Treatment: Chrome PlatedShell: Black Carbon FiberColor: Black Black and Black RedQuantity: 4pcsImpedance: Ultra Low ImpedanceConnection Method: Cold SolderingMaximum Wire Diameter: No More Than 9mm / 0.35inScope of Application: Widely Used in Professional Speaker Equipment.Package List:2 x RCA Plug (Black Black)2 x RCA Plug (Black Red)