--- product_id: 51173858 title: "Ducting Pipe Connector 125mm / 5\" Duct Hose Coupler Tube Coupling Joint Round Adaptor KO125-21" brand: "mkk" price: "₨455" currency: SCR in_stock: true reviews_count: 9 url: https://www.desertcart.sc/products/51173858-ducting-pipe-connector-125mm-5-duct-hose-coupler-tube-coupling store_origin: SC region: Seychelles --- # 125mm/5" precision fit Secure pipe coupling Durable stainless steel build Ducting Pipe Connector 125mm / 5" Duct Hose Coupler Tube Coupling Joint Round Adaptor KO125-21 **Brand:** mkk **Price:** ₨455 **Availability:** ✅ In Stock ## Summary > 🔗 Connect with confidence — the ducting upgrade your system deserves! ## Quick Answers - **What is this?** Ducting Pipe Connector 125mm / 5" Duct Hose Coupler Tube Coupling Joint Round Adaptor KO125-21 by mkk - **How much does it cost?** ₨455 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/51173858-ducting-pipe-connector-125mm-5-duct-hose-coupler-tube-coupling) ## Best For - mkk enthusiasts ## Why This Product - Trusted mkk brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Installation:** Push-fit design allows quick, tool-free assembly, saving you time on every project. - • **Universal Compatibility:** Works flawlessly with standard 5" round duct hoses, making upgrades and repairs hassle-free. - • **Seamless 125mm Connection:** Engineered for perfect fit with Ø125mm round ducting, ensuring airtight joins every time. - • **Slip-Resistant Bridge Design:** Innovative internal bridge prevents pipe slippage, maintaining system integrity under pressure. - • **Robust Stainless Steel Construction:** Crafted from premium stainless steel for long-lasting durability and corrosion resistance. ## Overview The KO125-21 Ducting Pipe Connector is a high-quality, stainless steel coupling designed for Ø125mm (5") round ducting systems. Featuring a slip-resistant internal bridge and a precise push-fit design, it ensures secure, durable connections ideal for HVAC and ventilation projects. ## Description This high-quality white plastic pipe connector is used as a connector piece of two pipes. The pipes are pushed into the connector. The bridge in the middle prevents the pipes from slipping through. This connector is used in a round pipe system. Please note that the connector is slightly larger as the dimensions refer to the external dimension of the pipe that is pushed into the pipe connector. ## Features - Ducting Pipe Connector - Ducting Size - 125mm/5" - Connector fits into Ø125mm (5'') round pipe ducting to connect two lengths together in a straight line. - For use with the Ø125mm (5'') Round Pipe Ducting systems. - Connector type: Round male fittings - outer Ø125mm (5'') to fit inner Ø125mm (5'') of ducting pipe. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B00FCDPW4E | | Best Sellers Rank | 183,189 in Garden (See Top 100 in Garden) 1,107 in Ducting 1,902 in Registers, Grilles & Vents 5,325 in Garden Hose Parts & Connectors | | Brand | MKK | | Colour | White | | Connector Type | Flange | | Customer Reviews | 4.1 4.1 out of 5 stars (485) 4.1 out of 5 stars | | Exterior Finish | Edelstahl | | Item Dimensions | 10 x 10 x 10 millimetres | | Item Weight | 0.05 Kilograms | | Manufacturer | Armar Trading LTD | | Material | Stainless Steel | | Model Number | K0125-21 | | Number Of Pieces | 1 | | Part Number | KO125-21 | | Size | 12.5 | | Thread Size | 5 inch | | Thread Type | Metric Parallel | | Unit Count | 1.0 count | ## Product Details - **Size:** 12.5 - **Material:** Stainless Steel - **Brand:** MKK - **Colour:** White - **Item dimensions L x W x H:** 10 x 10 x 10 millimetres - **Connector type:** Flange - **Thread size:** 5 inch - **Exterior finish:** Edelstahl - **Thread type:** Metric Parallel - **Number of pieces:** 1 ## Images ![Ducting Pipe Connector 125mm / 5" Duct Hose Coupler Tube Coupling Joint Round Adaptor KO125-21 - Image 1](https://m.media-amazon.com/images/I/31VjKER-XML.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good product. *by on Reviewed in the United Kingdom 27 December 2019* This is perfect but I ordered the wrong size - My error!! ### ⭐⭐⭐⭐ Its a one-way valve ! *by on Reviewed in the United Kingdom 7 August 2019* Be aware this coupling has a non-return flap in it which, at time of reviewing, is not stated in the description. However, it is easy to remove. It just explains why it's more expensive than a plain coupling, which you can get elsewhere much cheaper. I was just in a hurry, and it did arrive quickly. It does function as a joint piece with the flap removed. ### ⭐ This does not fit a 5" hose for air conditioning as advertised. *by on Reviewed in the United Kingdom 11 August 2020* Actually being sold with a hose that it does not fit.This is advertised by amazon as 'frequently bought together'.I guess the part the forgot to mention is 'frequently returned together' and 'buy this if you want to waste your time'. ## Frequently Bought Together - Connector Ventilation Pipe Round Duct Pipe Diameter 125 mm Ventilation System Duct K0125 21 - NEBURORA 59-82mm Hose Clip Adjustable 304 Stainless Steel Duct Clamps 4 Pack Worm Drive Hose Clamp Clips 3 inch Diameter Fuel Line Hose Pipe Clamps for Dryer Vent Air Duct Automotive Plumb - Ducting Pipe Elbow 90 Degree 125mm / 5" Round Tube Bend Ventilation Hose Connector Adapter Coupler KO125-23 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sc/products/51173858-ducting-pipe-connector-125mm-5-duct-hose-coupler-tube-coupling](https://www.desertcart.sc/products/51173858-ducting-pipe-connector-125mm-5-duct-hose-coupler-tube-coupling) --- *Product available on Desertcart Seychelles* *Store origin: SC* *Last updated: 2026-09-28*