Miller® Smith® SC-12 Series Size 0 One-Piece Acetylene Cutting Tip cuts 1/4 - 3/8" thick metal and is perfect for general hand and machine cutting. Cutting tip requires 40 - 50 SCFH cutting oxygen flow rate, 7.5 SCFH preheat oxygen flow rate and 7 SCFH preheat acetylene flow rate for cutting metals. Heavy duty tip offers excellent preheat characteristics needed for machine cutting. It is compatible with Smith SC200/DG200 series attachments as well as SC/DG series hand torches and machine torches.