These FINE-TEETH blades precisely and accurately cut wood, plastic and soft metals such as brass, aluminum and copper. They are ideal tools for limitless cutting projects, are compatible with other accessories and they produce a clean finished cut-virtually eliminating any further finishing operations. for your safety and protection, NEVER operate a rotary tool without the Gyros Guard Safety Shield when using cutting accessories Pack Contains: Blade, Washers Use Mandrel No. 80-18100. Pack Contains: Blade, Washers, Use Mandrel No. 80-18100.