The Milwaukee 49-10-9215 is a 15-piece oscillating multi-tool blade kit that covers cutting and sanding jobs in one organized set. It includes eight cutting blades: a carbide-tooth multi-material blade, TITANIUM CHARGED bi-metal blades suited for wood with nails, PVC, and drywall, and high-carbon steel wood blades with aggressive teeth for fast wood cuts. For sanding, you get a 3-1/2 in. triangle sanding pad with two sheets each of 60, 120, and 240 grit sandpaper. The blades use a universal-fit OPEN-LOK anchor that works with most major brands of oscillating tools; they are not compatible with Starlock tools. A modular storage case with removable pegs keeps everything organized, is designed for use in PACKOUT, and can be rearranged to fit extra blades.