Type: soft magnetic material Purpose: Traction Specification size: 3.5mm/5mm/7mm/9mm Model: anti-interference degaussing ring degaussing ring ferrite degaussing ring Scope of Application: cable connection. Wiring harness Current characteristics: DC Material: Nickel Zinc ferrite Initial suction: Standard Product material: Nickel Zinc ferrite Product Specification: inner diameter: 3.5mm/5mm/7mm/9mm Use: AV cable, coaxial audio, audio power cable, IP serial camera, etc. Should Product color: black Magnetic or not: no Product use:(1) clamping on the signal line plays the role of anti-interference and EMC electron magnetic compatibility (2) clamp on the power cord to stabilize current and improve sound quality Scope of Application: applied to all kinds of cable connection, wiring harness, household appliances Product features:(1) improve the electromagnetic field around the solenoid to avoid external interference (2) easy to install, easy to use, can be disassembled (3) good performance, high efficiency and long service life. (4) it will not cause distortion of the transmitted signal and will not affect your audio Product composition: 3.5MM anti-interference degaussing ring * 7PCs, 5MM anti-interference degaussing ring * 5PCs 7MM anti-interference degaussing ring * 8PCs, 9MM anti-interference degaussing ring * 5PCs