The Model 73-3 is a classic heavy duty design cutting attachment with brazed triangular stainless steel tubes. The captive union nut protects the seats and "O" rings from damage. It features a fold forward cutting lever and the forged solid brass head provides years of safe, dependable service. Compatible handles 18-5 (1401820) and 43-2 (1401150). Up to 6" cutting capacity. Fuel gas. * 1 year warranty.