One Fit, 1-1/4", Fast Wood HCS Blade, Universal Fit, One Fit Arbor, Designed For Cutting Wood, Drywall & Other Soft Materials, Will Cut Through A Few Nails But Mainly Used For Softer Applications, Can Be Used For Cutting Under The Kick Plate When Installing Flooring, Undercutting Door Jambs Or Flush Cutting Tongue & Groove, Flush Cut Design To Allow The Operator To Lay The Blades Flat On Surfaces Perpendicular To The Cut, Constructed With High Carbon Steel, Fits Fein, Bosch,Makita, Dewalt, Rockwell, Porter Cable, Milwaukee & More Oscillating Tools, Adaptor Included To Fit Dremel Quick Release & Old Rockwell.