POWERTEC 55 in. Aluminum Guide Rail Joining Set Compatible with DeWalt Track Saws : (2) Guided Rails and (1) Guide Rail Connector 71691 - The Home Depot
Makita Guide Rail Clamp (2-Pack) 191J52-3 - The Home Depot
DeWalt TRACKSAW Compatible GRS-16 PE D Guide Rail Square
Bessey Track and Table Clamps - Wood Clamps | Woodpeckers