For use with DEWALT® DCE450 Copper Swage Tool to make expansions in refrigeration-type soft copper tubing. The DEWALT® DCE450034 3/4" Swage Head features an automatic rotation for even expansions suitable for brazing in HVACR applications. Maximize durability with a steel body and nickel plated jaws designed to withstand tough environments. The full line of DEWALT® Copper Swage Heads size 1/4" through 1-5/8" are the only swage heads designed for use with DEWALT® DCE450 Copper Swage Tool (additional expansion heads and tool sold separately).