KP2745-18 - Lincoln Electric KP2745-18 Magnum PRO Copper Plus Contact Tip, 1/8 in, 550A (10-Pack)

Keep Your Arc Smooth and Your Gun Cool

Every welder knows the frustration of a contact tip that overheats, burns back, or fuses to the diffuser right in the middle of a long pass. The Lincoln Electric KP2745-18 Magnum® PRO Contact Tip is built to solve exactly those problems. Designed for heavy-duty welding with 1/8-inch wire at up to 550 amps, this isn't your average hardware store tip. It features Lincoln's Copper Plus® technology, which basically means there is more copper meat on the bone. The larger diameter helps pull heat away from the wire exit point, keeping the tip cooler even when you are pushing the machine to its duty cycle limits. A cooler tip means less resistance, a smoother arc, and a much longer lifespan before the keyhole starts to wear out.

One of the biggest headaches with high-amp MIG welding is trying to unscrew a tip that has practically welded itself to the diffuser. Lincoln addressed this with their Anti-Seize™ thread design. The threads are shaped to resist locking up, so when it is finally time to swap out the tip, it spins off easily with your pliers—no more wrestling with the gun or stripping threads. This feature alone saves time and frustration on the shop floor, letting you get back to burning wire faster.

These tips are designed specifically for the Magnum PRO series guns, ensuring a perfect fit and optimal gas coverage. The 1/8-inch bore is precision drilled for smooth wire feeding, reducing the micro-arcing that causes premature failure. Whether you are welding thick structural beams or heavy plate, having a reliable contact tip is the first step to a quality weld. This pack of 10 ensures you have plenty of backups in your toolbox, though with the extended life of Copper Plus, you won't be reaching for them as often as you're used to.

Upgrade your setup with the KP2745-18 and experience the difference that better thermal management makes. Consistent feeding, easy change-outs, and the durability to handle 550 amps make this the go-to choice for professional fabricators running heavy wire.