The Worx Exactrack WX530.9 20V cordless circular saw features an integrated "Easy Track" guide rail edge tracking system. Simply place any straight material (wood, metal, or plastic) into the guide rail, and Exactrack will quickly, accurately, and effortlessly follow the edge without the need for additional attachments or accessories. Please note that this is a bare tool, so the battery and charger are sold separately. The patented Lineo design keeps the blade flush with the guide rail, making straight cuts easier. The aluminum base ensures durability and a longer lifespan. The bevel cutting capability ranges from 0 to 50° in vertical cutting mode. A brake function enhances safety. The Powershare 20V battery is interchangeable with other 20V Worx tools.