The T10687 is sold as the saw only. Please see T24872 for the Guide Rail and T25094 for the Accessory Pack. The T25552 Master Pack includes the Saw, Guide Rail and Accessory Pack. This track saw redefines the circular saw, making traditional circular saws obsolete. Its plunge-cutting action eliminates flip-up blade guards and its riving knife reduces the risk of pinching and kickback for a new revolution in safety. And, although this saw cuts like any other circular saw, the optional Guide Rail is indispensable for making straight cuts when cutting wide panels. No more unsafe, over-extended reaching and poor balance while cutting wide panels on a table saw. Once you use this Track Saw, you-Inchll never go back to your old circular saw.