Features 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 painted or rusty plates. Course "V" splines which cuts better, resists clogs and makes cleaning easier. Heavy-duty tips fit "Forney" 1711 torch kit and similar "Victor" compatible equipment.Thick shell flangeExtra-heavy-duty shell end where the tip takes the most abuseLarger diameter decreases preheat time and maintains the cut on painted or rusty platesCourse V-spline which cuts better, resists clogs and makes cleaning easierFeatures copper shells machined from solid bar stock (not tubing)