The Fixed Router Base by Bosch is engineered to enhance your routing precision and control, making it an essential accessory for any woodworking project. Featuring a trigger control system conveniently located in the handle, users can enjoy superior handling and ease of use, while the macro and microfine adjustment system allows for meticulous bit depth adjustments. This fixed base accommodates larger bits with its generous 3-3/4 inch base opening and 2-inch sub-base opening, ensuring versatility for various applications. Its precision centering design facilitates accurate cuts when using jigs and templates, and compatibility with Boschs optional RA1129 Template Guide Adapter Set further enhances its functionality. As a product crafted from durable aluminum, this router base exemplifies Boschs commitment to quality and performance in the workshop.