For guided line drilling. The guide rail adapter is your most important accessory for quickly drilling in a line, ideal for long and wide workpieces. Simply slide it into the mobile drilling attachment, fix it in the desired position and place it on the guide rail. Guided: For drilling holes in a line with repeat accuracy for long and wide workpieces. Easily fitted: Quickly slide into the MB 40 without tools and fix in place. Compatible: Can be attached to all Festool guide rails without tools. Drilling holes in a line with repeat accuracy for long and wide workpieces. Drilling in a line.. Precise guiding.. Quick to install. The guide rail adapter allows you to drill holes in a line with repeat accuracy for long and wide workpieces.. The adapter can be aligned using fine adjustment, for exact and secure guidance on the guide rail. Custom-fit for all Festool guide rails.. Slide the guide rail adapter into the MB 40 and fix both screws in the desired position. Without play. Support surface extension. Perfect guidance on the guide rail through fine adjustment.. The guide rail adapter can be turned round for greater stability. for drilling holes in a line with repeat accuracy for long and wide workpieces. for MB 40