Heavy-Duty Rivnut Tool Kit: Engineered for strength and precision, this threaded rivet tool delivers consistent performance for metal, and fiberglass applications across automotive, furniture, and marine repairs. 12 Metric Head Sizes Included: Comes with 12 interchangeable mandrels and nosepieces in popular metric sizes for wide-ranging compatibility and use across multiple projects without extra tools needed. All-in-176-Piece Set: Includes a sturdy rivet tool, mandrels, and 164 assorted rivnuts neatly stored in a hard-shell case for convenient transport and organized access during projects. Ergonomic Grip & Durable Design: Built with anti-slip handles for maximum comfort and control. The reinforced carbon steel construction ensures long-term durability even in demanding environments. Use scenarios - Automotive: install rivnuts for secure mounting of panels, spoilers, or accessories on bodies and frames. - Furniture: reinforce metal-to-metal joints or assemble frames with dependable fasteners. - Marine and fiberglass: attach hardware to decks, bulkheads, or fiberglass surfaces with reliable nut support. This description highlights function, compatibility, size, material, and performance, while providing practical applications in a clear, professional tone.