The Festool Parallel Guide greatly enhances the capability of the Festool Guide Rail System by providing a faster, easier, smarter way to create consistent rip cuts. The Parallel Guides are the two longer sections and offer consistent rip cuts using two adjustable stops that engage the edge of the material parallel to the cut line. They are adjustable up to 650mm ( 25 19/32"). The Parallel Guide can be used with any length Festool FS/2 guide rail. Includes Parallel Guides only. Parallel Guide Extensions and Guide Rail sold separately.