The MILWAUKEE Universal fit OPEN-LOK 5 Piece Oscillating Multi-Tool Blade Variety Pack contains (1) Titanium Enhanced Blades made from premium high-speed steel. These 1-3/8 inch. Bi-Metal Blades are ideal for users cutting wood and nails, PVC and drywall. These multi-tool blades deliver faster cuts than the previous generation bi-metal blades and now with more teeth, an increased cutting width and a deeper plunge cut. Also included are (4) High Carbon Steel Blades with edge ground teeth to provide users with optimal cutting performance in wood, PVC, drywall and other soft materials. Delivering faster cuts than the previous generation high carbon steel Milwaukee blades and now with more teeth, an increased 1-3/8 inch cutting width and a deeper plunge cut. This blade pack includes a storage case and is designed with global materials.