The MILWAUKEE Router Guide Rail Adapter delivers portable precision and enhanced versatility for the Milwaukee M18 FUEL Compact Trim Router (2723-20) and the M18 FUEL 1/2in Router (2838-20). The guide rail adapter is compatible with Milwaukee guide rails and allows for laser-straight cuts on the jobsite or in the shop. The durable aluminum construction, cam lock system, and anti-tilt feet deliver smooth, consistent passes across the guide rails. The adapter also features an adjustable depth of 2in, a depth scale with markings in inches and millimeters, and included gauge block that increases accuracy and reduces set-up time.