Take crimping tasks to the next level with the Hilmor swaging tool. Works with pipes from 5/16" to 1-5/8" without cracking. Ideal for HVAC installation, maintenance, and repair. Compatible with soft metals like copper, steel, aluminum, and brass. A hydraulic mechanism and release button add comfort. Gun-style design allows maneuvering in tight spaces for versatile use. Lightweight and easy to set up, enabling one-handed operation and minimizing fatigue. Comes with five expansion heads from 3/8" to 7/8" for a broad range of applications.