All matched Threader/Sets include Die Heads, Ratchet Assembly, Ratchet Handle and Alloy Dies. All Threader Sets use same 12-R Dies in Die Head.Manual ratchet for speed and ease-of-use. Comes with ½, ¾ & 1, 1-1/4 dies and die heads. Dependable, heavy-duty construction. Die heads lock into place for secure, dependable operation. Replace Dies For Threading of Additional Material Including Stainless Steel and PVC