The Makita 194368-5 1.4m Guide Rail is primarily designed for use with the SP6000 Plunge Cut Saws. Multiple rails can be joined to one another using the P-45777 guide rail connector (sold separately).
When used with a Makita Plunge Circular Saw (SP6000) - you have a more portable option to a table saw for ripping sheet material. The Guide Rail interacts with the Plunge Saw (not included) to provide smooth, dead-on straight cuts.