Milwaukee Universal Fit OPEN-LOK 6-Piece Oscillating Multi-Tool General Purpose Blade Kit provides an assortment for cuts in hardwood, wood & nails, wood, PVC (polyvinyl chloride), and drywall. The included Titanium Enhanced Bi-Metal Blades use premium high-speed steel and last up to 15X longer than standard high carbon steel (HCS) blades. The bi-metal blade is ideal for smooth cuts in wood with nails, PVC (polyvinyl choride), and drywall. The Triple Ground Japanese Tooth Blades deliver up to 2X faster cuts than the previous Milwaukee HCS (High Carbon Steel) blade and features a PRO-CURVE cutting edge for greater control. Ideal for fast, clean cuts in hardwood and can also be used in other woods, PVC, and drywall. The oscillating wood blade has been designed with precision ground aggressive teeth for fast cuts in wood, drywall, and PVC. Includes (1) 1-3/8 In. HCS wood blade, (2) 1-3/8 In. HCS Japanese Tooth Pro-Curve hardwood blade, (2) 1-3/8 In. titanium enhanced bi-metal multi-material blade, (1) 2-1/2 In. titanium enhanced bi-metal multi-material blade.