The Arrow Oscillating Assortment Blade Pack comes with three 1 ⅜″ blades that are ideal for cutting hard- and softwoods, metal, wood with nails, PVC, and drywall. The three-pack assortment of blades features a durable high-carbon steel blade that's perfect for cutting hard- and softwood quickly, a bi-metal blade that's ideal for cutting wood with nails, and a strong titanium-coated blade that can be used to cut wood and metal. The universal-fit open-back connector fits most oscillating multi-tools and requires no adapter. These high-performance blades featured in the Oscillating Assortment Blade Pack are the perfect accessories to add to your oscillating multi-tool kit.