The Guide Rail Adapter (196953-0) is engineered for increased accuracy and convenience when used with the category-leading Makita 18V LXT Brushless 6-1/2” Circular Saw (XSH03M/Z) and guide rail (saw and rails sold separately). The Guide Rail Adapter allows the use of XSH03M/Z with Makita 55' and 118” Guide Rails. When used together, the XSH03M/Z, Guide Rail Adapter, and Guide Rail offer a more portable solution over a table saw for cutting large wood panels and other wood materials.