Bosch 4 in. Bi-metal Segment Blade is designed to deliver exceptional performance with Bosch Starlock® oscillating multi-tool accessories. These accessories feature a three-dimensional fit that creates a fully integrated system between the multi-tool and the accessory, providing a new level of torque transfer for oscillating multi-tools. The innovative Starlock® design uses a three-dimensional shape instead of a flat interface, resulting in the highest torque transfer, reduced vibration, and enhanced capability for demanding applications. These blades remain compatible with OIS® tools and fit both existing models and the next generation of high-performance Starlock® tools. Made in Switzerland, Bosch multi-tool accessories ensure precision accuracy and long-lasting durability for professional use. Bosch continues its tradition of innovation with the Starlock® interface, setting a new professional standard in oscillating multi-tool systems. Model Number: