This is a 4 piston Mini Quick change tool post, and three tool holders. All parts are made of STEEL. I bought one of the aluminum ones for my 7X14 Grizzly G0765 lathe, and was very disappointed with it. So I built my own, and it works great. So I’ve decided to offer it to others. It is a four piston, so it holds the tool holder more securely. The single piston type, if your trying to clamp the holder high, or low, it try’s to twist the holder. And the sloppy fitting dove tales on the aluminum tool posts make it even worse. Not with a four piston. It holds very securely!! It will work on a 7X10, 7X12 or 7X14 mini lathes. It may work with others, but I’m not sure, so I don’t want to say it will. If you give me the distance between the top of the cross slide, where the tool post will mount, and the center line of your chuck, I can determine weather it will work with your lath or not. You will receive, (1) Four piston Quick change tool post. (1) 10X1.50 mounting bolt. (1) Boring Bare tool holder for 3/8” tools. (1) Parting tool holder for 1/2” parting tools. And (1) Turning tool holder for up to 1/2” tools. Depending on what make of lathe you have, you may have to use another size mounting bolt. If more tool holders are desired, let me know and I’ll make them up for you. The tool post has been greased with a high quality bearing grease. The aluminum ones come dry as a bone. The measurements of the tool post are, the dove tail area only, is approx. The body is approx, 1.750 square. From the bottom of the tool post to just under the mounting bolt is approx, 2.620 tall. The tool holders are, 1” square X 2” long. Like the big boys say, I’m so sure you’ll love this tool post. Thank you for looking. I haven’t had one piece come back yet. Unfortunately , some people don’t leave feedbacks. So, I don’t have over 170 positive feedbacks to go with them. But if you check my feedbacks, you’ll see a lot of happy customers. Several of my customers have asked me to make a tool holder for 1/2” boring bars. So I now offer one. If anyone is interested, let me know.