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
55 inch Guide Rail Track for DeWalt Track saw
DeWalt's New Saw: The Inside Track! | THISisCarpentry
DEWALT 12 in. Dual-Port Rip Guide DWS5100 - The Home Depot