Bosch OSC314TC 3-1/4-inch TiN BIM Circular Saw Blade 12 Pin design provides a secure connection for high-torque oscillating tools (tools not included) Tin Coated BiM Design provides up to 30% longer life over the standard BiM in metal cutting Full Circle design gives more usable blade for longer blade life 360 Degree full circle blade offers many usable teeth Great for cutting sheet metal, fiberglass, stone, wood and wood with nails