KP2745-072R-B100 - Lincoln Magnum PRO 550A Contact Tip .068-.072 Copper Plus (100-Pack)

Keep Your Arc Stable and Your Downtime Low

Every welder knows the frustration of a contact tip failing in the middle of a critical pass. Burnback, keyholing, and erratic arcs don't just ruin the weld; they ruin your rhythm. The Lincoln Electric KP2745-072R-B100 Magnum® PRO contact tip is built to solve these problems, specifically for welders running heavy wire at high heat. Rated for a massive 550 amps, these tips are designed to take a beating without softening or fusing. If you are pushing .068 or .072 wire, you are likely working on thick plate or heavy structural components where stopping to change a tip every hour kills productivity. These tips use Lincoln's Copper Plus® technology, which basically means they stay cooler and last longer than the standard copper tips you might be used to.

Built for the Heat of Heavy Industry

When you are welding at 400, 500, or 550 amps, heat is the enemy. Standard tips get hot, expand, and grab the wire, causing drag and erratic feeding. The KP2745-072R-B100 is engineered with a special alloy that pulls heat away from the bore faster. This keeps the wire sliding smoothly and the electrical contact solid. The result is a crisp, consistent arc that starts when you pull the trigger and stays stable until you let off. Whether you are running flux-cored wire or solid MIG wire in the 1.7-1.8mm range, these tips provide the reliability you need to lay down long, continuous beads without worrying about the tip melting into the puddle.

Fewer Changes, More Welding

This pack contains 100 contact tips, which is a serious supply for a serious shop. But the real value isn't just in the quantity; it's in how long each tip lasts. Because the Copper Plus® alloy resists wear and heat damage, you will find yourself changing tips less often. That means less time walking back to the tool crib, less time unscrewing hot parts, and more time under the hood making money. The threads are designed to resist seizing, so when you finally do have to swap one out, it comes off the diffuser easily without stripping or binding.

Perfect Fit for Magnum PRO Guns

These tips are made specifically for Lincoln's Magnum® PRO MIG guns. If you are running a Magnum PRO setup, you know it's built for comfort and performance. Using the correct KP2745 series tip ensures you get the most out of that gun. The fit is tight, the conductivity is excellent, and the gas coverage remains consistent because the tip is dimensionally perfect for the nozzle. Don't compromise your high-end equipment with cheap, generic consumables. Stick with the genuine Lincoln Electric parts designed to handle the amperage and wire size you are running every day.