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 on painted or rusty plates. Course "V" splines better, resist clogs and makes cleaning easier. Tips fit Forney 1711 torch kit and similar Victor compatible equipment. WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. -