Hot Max 22055 .035-Inch Welder Contact Tips, Tweco Style, 200A, 5-Pack MIG Welder Contact Tips are .035 Inch (.9 MM), Size 11-35 Tweco Style compatible contact tips work with most MIG welders using Tweco style MIG Guns Rated for machines up to 200 Amps, tips are 1" in length Precision copper contact tips for professional use Tweco Style tips are compatible with Hot Max, Binzel, Clark, Forney, Lincoln, and many other MIG welders