Our Universal Fit OPEN-LOK Titanium Enhanced Carbide Teeth Extreme Material Blades are designed for Oscillating Multi-Tools. They have a unique aggressive tooth design that offers you optimal cutting performance in wood, screws, metal pipe, nails, cement board, plaster, and more. The MILWAUKEE 1-3/8 in Titanium Enhanced Carbide Teeth Extreme Material Blade lasts up to 50X longer than standard bi-metal blades and can be used in a wide range of materials for the longest blade life. The unique, aggressive carbide tooth design offers you faster cuts and better cutting performance in wood when compared to standard carbide blades. These Milwaukee multi-tool blades are designed and made in the USA with global materials. Includes: (5) 1-3/8 in TITANIUM CARBIDE TEETH MULTI-MATERIAL BLADES