Bosch 4" Multi-Tool Bi-Metal Wood/Metal Segmented Saw Blade offers a wide 4" cutting area and large diameter for wide cuts in door jambs & trim work with cutting nails. Bosch Starlock oscillating multi-tool accessories deliver a 3-dimensional fit designed to provide a completely integrated system between multi-tool and accessory. This new dimension in torque for oscillating multi-tools uses a 3-dimensional shape instead of a flat interface, providing the highest torque transfer, reduced vibration, and the ability for higher performance applications. These accessories continue to be OIS compatible and fit existing tools, as well as the next generation of high-performance Starlock tools. Bosch multi-tool accessories are Swiss made for precision accuracy and long life in the most demanding professional applications.