One Fit, 4-In-1, Oscillating Drywall Blade, Multi-Tool, Cut Electrical Box Outlets, Recessed Lighting Holes & A Host OfOther Diverse Drywall Related Projects, 4 Unique Functionalities: Dagger Blade Allows For Detailed Cuts, Especially Tight Circular Cuts, Depth Gauge Increments Reflect Drywall Thickness, & Designed To Monitor Depth Of Cuts, Piercing Tips Initiate The Cut For A Clean Start, Along With Push/Pull Cut Capabilities, Shaver Notches Help Remove Excess Drywall For A Better Fit, Fits Milwaukee, Fein, Bosch, Makita, Dewalt, Rockwell, Porter Cable & More Oscillating Tools.