Our OPEN-LOK™ 3-1/2" TITANIUM ENHANCED™ Bi-Metal Multi-Material Segmented Oscillating Multi-Tool Blades are made from premium high-speed steel. These bi-metal blades are ideal for cuts in wood, nails, PVC, and drywall. TITANIUM ENHANCED™ Bi-Metal to extend blade life. Raised anchor and segmented design allows for flush cutting and cutting up to corners without overcut. These blades feature a Universal Fit OPEN-LOK™ anchor quick blade changes across 100+ multi-tools. Not compatible with Starlock tools.