Heavy Duty Torch Cutting Tip, Victor-Compatiable, Size 0features 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(TM) compatible equipment.