Rockwell RK5108K SoniCrafter 100-Piece Super Professional Kit A complete workshop in one versatile tool Features high-frequency oscillation technology for the safest and most accurate work Cuts wood, thin metals, fiberglass, masonry, plastic, carpet and flooring, cement board, and even vinyl siding Requires very little downward pressure for sanding jobs and delivers great accuracy Magnesium-alloy gear housing; lightweight enough for extended use and rugged enough for long-term durability