MTP Tm 4 Bi Metal /Fine Wood Blade Quick Release Universal Fit Multi Tool Oscillating Multitool Saw Blade for Craftsman 20v Bolt-on Rockwell Hyperlock Shopseies Fein Multimaster Porter Cable Black and Decker Bosch Milwaukee Makita Chicago Blue Hawk 4 Pcs Metal/Wood Saw Blades w/ Quick Release Arbor Manufacturer by MTP Fit Most Quick Release system as well as old Hex Screw system fit in Porter Cable, Rockwell Hyperlock, Bosch , Black and decker, Craftsman Bolt-on 20V Please check product description for model detail Not fit in Dremel Quick release system MM40 MM45 (adapter need)