CHOWEL A1, 20 ea, 0.030” Replacement MIG contact tips, Miller style, 770177, compatible with Hobart Miller welder, Handler 125, 125 EZ, 130, 140, 190, 210MVP, TREK 180, Auto Arc Toolmate 100, etc. CHOWEL A4, 20 ea, 0.035 Replacement MIG contact tips, Tweco style, 11-35, compatible with various MIG welders such as Hot Max, Binzel, Clark, and Tweco Mini-mig, Tweco, Lincoln Magnum 100L.