Hello, Yes, the Trak and Stop System does come with the tapes. Thanks!
Hi Bill, I believe it would be best to reach out to the manufacturer Kreg for assistance, as we do not offer additional parts. I have linked their website below with their contact information page so that you may receive the best details from their specialists. Hope this helps! Thanks for shopping Home Depot! https://www.kregtool.com/customer-service/contact-us.aspx
Thank you for your inquiry. I am sorry to say, at this time, there are no hold down clamps for the t-slot.
If you use all 4 rails it would total 8 feet in length. You could definitely extend it with another set of tracks but you would have to order a longer tape measure to stick down on it. The one that comes with it goes up to 124 inches.
Each rail is 2 feet in length. The four rails give you 8 feet total.