Small, lightweight cutting attachment with cutting capacity up to 3-inch thick (76 mm) steel. Solid silver-brazed construction. Features o-ring seating and easy-to-change slip-in Graf-Tite® cutting tips with cost-saving soft seats. Use with any industrial fuel gases — acetylene, propane, natural gas, propylene, hydrogen, and many others.This torch has the same quality construction and features built into the larger series of Miller | Smith cutting attachments. AC309 cutting attachment is covered by our warranty when used with authentic Miller | Smith tips. Works with all MC Series cutting tips.