Adjustable height for precise alignment. Versatile compatibility with 6 to 12 in. Easy installation and durability. 8-Piece Quick Change Tool Post Set, Fits 6 in. Our quick change tool post set fits 6 to 12 in. Lathes and works with various models. It enables fast tool changes with a handle turn, precise alignment with a rotating screw, and long-lasting durability with cast iron construction. Simple to install, it is ideal for upgrading your workshop.