Yes, I use a LFCD on my 9mm, 380, 40S&W, 45ACP, and .223 Rem tool heads. I did order a few packages of the Dillon lock rings. The dies are fairly short for the Dillon tool heads, and some of my Lee lock rings would not bite on the die because it was threaded in so far. The Dillon rings seem to work a bit better, plus the Dillon wrench now works for all my lock rings.