KP2100-4B1 - Lincoln Electric KP2100-4B1 Contact Tip 5/64" (2.0mm) - 10 Pack

Keep Your Arc Smooth and Your Bead Straight

Every welder knows that the contact tip is the unsung hero of the MIG gun. It’s the last point of contact before the arc strikes, and if it’s worn out or cheap, your whole weld suffers. The Lincoln Electric KP2100-4B1 Contact Tip is built for those heavy jobs where you are running thick 5/64-inch (2.0 mm) wire. Whether you are pushing solid wire or running heavy flux-core, these tips are designed to take the heat and keep the current flowing smoothly. Cheap tips wear out fast, turning your wire feed into a stuttering mess, but Lincoln’s copper alloy construction stands up to the abuse of high-amperage welding.

We know that burnback is the enemy. When a tip gets too hot or the hole gets sloppy (keyholing), the wire starts to wander, and the arc gets erratic. That’s why these Lincoln tips are machined with precision. The 5/64-inch bore is tight enough to ensure good electrical contact but smooth enough to let the wire feed without dragging. The 5/16-18 thread locks tight into your diffuser so you don't have to worry about it rattling loose in the middle of a long pass. Good conductivity means a stable arc, and a stable arc means you spend less time grinding out bad welds and more time laying down metal.

This pack comes with 10 contact tips, which is exactly what you need in a busy shop. There is nothing worse than running out of consumables in the middle of a shift. With a 10-pack in your toolbox, you can swap out a worn tip the second it starts acting up, ensuring your quality never drops. These tips are compatible with standard Lincoln Magnum guns and other setups that take the KP2100 series. Don't let a two-dollar part ruin a thousand-dollar job—stick with genuine Lincoln Electric tips for reliable feeding and consistent penetration.