Get the replacement blade that makes your Milwaukee® 2-1/8" 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 2-1/8" SWITCHBLADE™ Replacement Blade Kit includes 10 replacement blades, 2 feed screws, 2 set screws, 1 hex wrench, and storage case.