Get the replacement blades that make your Milwaukee® SwitchBlade™ selfeed bit instantly new. Milwaukee® SwitchBlade™ replacement blades are made of hardened steel for long life. They're easy to change out, so you're always ready for faster drilling and less downtime on the job. The SwitchBlade™ replacement blade kit includes (3) replacement blades, (2) set screws, (1) hex key and storage case.