Note: Only the slit style collets are compatible with the ally5 cups.<br><br>Furick Cups Ally5 #17 & #18 Torch includes 1 cup mounted on collet body, 1 3/32-2.4mm slit style collet and an insulator.<br><br>This is for #17 and #18 torches only. It can fit on #26 but you may have to run without an insulator. All torches are slightly different especially when it comes to the #17/18/26 size torches because all the manufacturers have their own idea on construction and we cannot guarantee the insulator will fit on every torch made in different countries, but the cup will screw on and can be used.<br><br>The Ally5 cups is an AC/DC polarity cup and has an amperage rating of 200 amps, it is the "go to" cup when welding thinner aluminum assemblies and needing great visibility. It is made of quartz grade laboratory glass and can withstand the high heat environments associated with welding on AC. We do not recommend "walking the cup" with any glass Furick Cups due to the delicate nature of glass.<br><br>All glass cups are subject to pick up dirt and debris as are ceramic style cups. Use these accordingly and try to refrain from welding on dirty/oily applications that would spit back at glass and impede visibility.