--- product_id: 39453900 title: "20 Pcs Snap on Ferrite Core Cord Ring RFI EMI Noise Filter Black" brand: "forsun" price: "376 kr" currency: NOK in_stock: true category: "Forsun" url: https://www.desertcart.no/products/39453900-20-pcs-snap-on-ferrite-core-cord-ring-rfi-emi store_origin: NO region: Norway --- # Easy snap-on installation Reduces EMI/RFI noise 5 sizes fit 3-13mm cables 20 Pcs Snap on Ferrite Core Cord Ring RFI EMI Noise Filter Black **Brand:** forsun **Price:** 376 kr **Availability:** βœ… In Stock ## Summary > πŸ”’ Lock in Signal Clarity, Lose the Noise! ## Quick Answers - **What is this?** 20 Pcs Snap on Ferrite Core Cord Ring RFI EMI Noise Filter Black by forsun - **How much does it cost?** 376 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/39453900-20-pcs-snap-on-ferrite-core-cord-ring-rfi-emi) ## Best For - forsun enthusiasts ## Why This Product - Trusted forsun brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Snap & Secure Design:** Tool-free double snap closure for quick, hassle-free installation anytime, anywhere. - β€’ **Bulk Pack for Maximum Value:** 20 pieces included, ensuring you’re always ready to optimize your workspace or home setup. - β€’ **Versatile Application Range:** Perfect for USB, HDMI, audio, power, and industrial cablesβ€”keep all your tech noise-free. - β€’ **Universal Fit for Every Cable:** Five precision sizes (3mm to 13mm) cover all your essential cords effortlessly. - β€’ **Crystal Clear Signal Integrity:** Effectively suppresses electromagnetic interference to boost your device performance. ## Overview This 20-piece set of black snap-on ferrite core cord rings includes five different sizes (3mm, 5mm, 7mm, 9mm, 13mm) designed to fit cables with inner diameters from 3 to 13 mm. Engineered to reduce electromagnetic interference (EMI) and radio frequency interference (RFI), these ferrite cores improve signal integrity across a wide range of cables including USB, HDMI, audio, and power cords. The easy snap-on design allows quick installation without tools, making it an essential accessory for professionals seeking cleaner, faster data transmission and noise-free connectivity. ## Description [Feature]Helps reduce the E.M.I. black plastic closed ferrite core on the AC power cord for 5 mm AC power cords. Ideal for eliminating noise from USB, Firewire, telephone, power cord, coaxial cable, audio, video cable, etc.[Scope of application]βœ”3.5mm/ 0.14in (inside diameter): for 0.06 - 0.14in / 1.5 - 3.5mm cableApplications: Car DVR, headphone cable, speaker cable, mouse cable, keyboard cable, USB cable, etc.βœ”5mm/ 0.2in (inside diameter): for 0.14 - 0.2in / 3.5 - 5mm cableApplications: Car DVR, speaker cable, mouse cable, keyboard cable, USB cable, RS232 serial camera cable, etc.βœ”7mm/ 0.27in (inside diameter): for 0.2 - 0.27in / 5 - 7mm cableApplications: AV cable, coaxial audio, audio power cable, IP serial camera.βœ”9mm/ 0.35in (inside diameter): for 0.27 - 0.35in / 7 - 9mm cableApplications: HDMI cable, VGA cable, DVI cable, power cable, speaker cable, industrial cable, etc.βœ”13mm/ 0.51in (inside diameter): for 0.35 - 0.51in / 9 - 13mm cable[Easy to use]Easy to install double snaps; reduce electromagnetic interference and improve signal integrity.The structure is simple and easy to install. Just clip it for a clearer signal and faster data transfer.[Product description]Packing: 20 * cable clamp (includes 5 different sizes) for wires with an inner diameter of 3/5/7/9/13 mm ## Features - Package included: 20 pieces ferrite cable clips (with 5 different size) - 3 mm: outer dimension-25 mm x 13 mm; 5 mm: outer dimension-25 mm x 13 mm; 7 mm: outer dimension-30 mm x 17 mm; 9 mm: outer dimension-35 mm x 20 mm; 13mm: outer dimension-36 mm x 24 mm - Fits for cord with 3 mm, 5 mm, 7 mm, 9 mm and 13 mm inner diameter - Reduce electro-magnetic interference and improve signal integrity - Color: black ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01N0AV746 | | Best Sellers Rank | #97,408 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #20 in Electromagnetic Interference Filters | | Date First Available | November 9, 2016 | | Item Weight | 4.2 ounces | | Item model number | 43237-2 | | Manufacturer | FORSUN | | Package Dimensions | 6.18 x 3.94 x 1.77 inches | ## Images ![20 Pcs Snap on Ferrite Core Cord Ring RFI EMI Noise Filter Black - Image 1](https://m.media-amazon.com/images/I/51gXjI0NsrL.jpg) ![20 Pcs Snap on Ferrite Core Cord Ring RFI EMI Noise Filter Black - Image 2](https://m.media-amazon.com/images/I/41FBPpe3KBL.jpg) ![20 Pcs Snap on Ferrite Core Cord Ring RFI EMI Noise Filter Black - Image 3](https://m.media-amazon.com/images/I/51hkjaTyTyL.jpg) ![20 Pcs Snap on Ferrite Core Cord Ring RFI EMI Noise Filter Black - Image 4](https://m.media-amazon.com/images/I/51RNzcP5CkL.jpg) ![20 Pcs Snap on Ferrite Core Cord Ring RFI EMI Noise Filter Black - Image 5](https://m.media-amazon.com/images/I/41hvIPxCmwL.jpg) ## Questions & Answers **Q: Could these work for a 3.5mm double coil wire?** A: These cores come in various sizes, that you need 3.5 mm is accommodated in a 1.5 mm cable at least up to 3.5 mm maximum, and if it does not work, you can use the core of 5 mm, which fits into a 3.5 mm cable at least up to 5 mm and I think that the cable you have should fit well in one of those two cores. **Q: what frequencies do these absorb** A: that depends on the length of cable they are being used on. It's the cables that act as antennas, both radiating and receiving signals. It may take multiple units on your cables to reduce/eliminate the bothersome signals. **Q: Will these filter out a radio station leaking into my audio** A: It depends on the strength and the proximity of the transmitting station. Under most conditions, you may be able to minimize or eliminate incoming radio frequency interference by clamping these onto your speaker leads. It may take more than one if the signal is very strong. **Q: Could these work for a 3.5 mm double coil wire?** A: Should work fine. ## Frequently Bought Together - 20 Pcs Snap on Ferrite Core Cord Ring RFI EMI Noise Filter Suppressor Cable Clip for 3.5mm/5mm/7mm/9mm/13mm Diameter Cable, Black - BOSS Audio Systems Ground Loop Isolator B25N noise Filter for Car Audio Systems --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.no/products/39453900-20-pcs-snap-on-ferrite-core-cord-ring-rfi-emi](https://www.desertcart.no/products/39453900-20-pcs-snap-on-ferrite-core-cord-ring-rfi-emi) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-09-16*