The Milescraft TrackSawGuide turns any circular saw into a precision guided rail saw system. Get perfectly straight cuts, whether you're shredding leaves up to 50 inches long, cutting crosses or angles. Eliminate risky freehand cuts that end up costing you valuable time, money and frustration. Unlike other track saw systems, the all-aluminum base and rail construction increase the rigidity of the TrackSawGuide. This reduces bending and clearance found in plastic saw guides and provides a more accurate cut. The aluminum base is lined with anti-friction pads that slide along the rails for smooth and easy operation. In addition, you can adjust your preferred tension using the included slip adjusters. The TrackSawGuide base is universal, fits most circular saws on the market with blades up to 19.5 cm. To align the TrackSawGuide, simply align the red strip to your cut mark. The strip serves as a guide and the blade cuts directly to the edge. It also helps prevent chips and chips. Long non-slip strips on the bottom of the rails hold the TrackSawGuide in place. For a safer cut, you can use the included T-clamps to lock the rails to your workpiece. The TrackSawGuide can extend from 70.5 cm to as long as needed with available GuideRail additions. The low profile also allows you to cut deep enough to handle common interior doors. The Milescraft TrackSawGuide system is also versatile and portable. Bring the saw to the workpiece - in the store or on the field, and get perfectly straight cuts anywhere.