Welding contact tips are highly misunderstood components in a MIG gun setup. Choosing the correct contact M5 x 18mm tip for your welding application and understanding how to keep it performing at its best are.  MB14 Compatible Parts many consumable parts used with DIY Mig welding machines are similar in manufacture and branded by many different suppliers, MB14 Compatible Parts. Contact tips are MB14 M5 x 18mm long, gas nozzles 38mm or 45mm long M8 thread, liners plastic normally black or metal which are colour coded blue 0.6mm to 0.9mm wires as there own Hobby MB14. Mig torch necks hare M8 thread to the torch 1.0mm pitch or 1.25 1.25 pitch usually on older torches or no thread fitted to the gas trigger block. MB14 Compatible Parts the most common mistake is customers ordering an MB 15 torch neck which has a 10mm thread

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