Forney 60448 Oxy-Acetylene Cutting Tip, Size #1 (1-3-101) Victor® CompatibleFeatures Copper shells machined from solid bar stock (not tubing). Larger diameter decreases preheat time and maintains the cut on painted or rusty plate. Course "V" splines which cuts better, resists clogs and makes cleaning easier. For medium duty Copper shells machined from solid bar stock (not tubing) Thick shell flange Extra heavy duty shell end where the tip takes the most abuse Larger diameter decreases preheat time and maintains the cut on