Dog River Tools Mill Tram system makes the process of tramming your mill fast, easy and accurate to a fine degree. Our mill tramming tool has an interchangeable 1/4 inch and a 1/2" shaft, making it possible to use in a large milling machine or a smaller machine like a router. The body is reversible, so it can be used with a downward sweep on a mill with lots of Z travel, or an upward sweep for a machine with limited Z travel like a router. Shank sizes are available in 1/2 inch shank which is 2 inches tall and 1/4 inch which is 1.5 inches tall, with a 3/8 hole used to locate the dials indicator in a range of 4-7 inches. If you need accurate cuts and the best finishes, your mill needs to be in tram. Dog River Tools is a brand you can trust, we stand behind every product. Our tools are used by Professionals and Hobbyist. Check out all our tools!