100% brand new and high quality: RoHS COMPLIANCENoise and distortion are bad for audio, destroying precious detail and smearing resolution. The open RCA inputs are channeling RFI and EMI noise right into the heart of your components. Cover all the unused RCA inputs in your system with the RCA caps and keep this noise from getting into your components. Our RCA caps slide right over unused RCA jacks and will provide both sonic and environmental protection. This Noise-Stopper caps are grounding plugs that help you block out this unwanted noise. Just slip a cap over the open inputs on the back of your Hi Fi gears. You will aware Noise-Stopper caps lower the noise floor and allow your equipment to perform to it's fullest potential. Function:For elimination of electromagnetic noise pick-up from unused RCA connectors in Audio vedio Equipment protector dust proof Gold Plated brass to ensure ultra shield and protection shield against RFI, EMI dust and corrosion Suitable for either shorting or non-shorting application Package Content: 10 pcs caps Specification: Material:Brass made with Gold plated colour:Gold Note: 1.No retail package. 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.other accessories demo in the picture are not included! 4.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 10 PCS