Not just saws–compound mitre saws. One click and you're done. You can easily combine the FSK cross cutting guide rail with your portable circular saw or plunge-cut saw, allowing you to select the length that suits you and your requirements: 250 mm, 420 mm or 670 mm. In just a few steps, this produces a portable and easy-to-use compound mitre saw system for accurate and precisely angled cutting. Compatible portable circular saws and plunge-cut saws can be easily connected to the cross cutting guide rail to form a single unit, by means of a quick-release fastener Efficient cross cuts due to quick placement on the workpiece Cutting length of 670 mm makes it suitable for trimming OSB floorboards as well Right-angled cross cuts with repeat accuracy thanks to precision guide Retract .