MILWAUKEE Compact Portable Pipe Threading Forged Aluminum Die Heads are the Industry's lightest die heads. Forged from military grade Aluminum providing maximum durability and up to 50% lower weight from competitive die heads. Up to 20% larger slots allow clearer visibility with less nesting for a smoother threading process. The smooth face caps give a comfortable place to put your hand while engaging onto the pipe. Compatible with MILWAUKEE M18 FUEL 1- Compact Pipe Threader and Ridgid 600-I Power Drive. All Milwaukee Forged Aluminum Die Heads are backed by Milwaukee's Limited Lifetime Warranty.