Fangrui Product Details Sturdy Material And Rust-resistant Finish - Constructed From High-quality Zinc Plated, These Rivet Nuts Are Robust And Sturdy, Ensuring A Prolonged Service Life. The Gold Zinc Finish Not Only Enhances Their Appearance But Also Provides Excellent Protection Against Rust And Corrosion, Extending Their Usability In Various Environments. Comprehensive Rivet Nut Kit - Each Package Includes 50 Pieces Of 5/16-18 Rivet Nuts, Offering A Sufficient Supply For Multiple Projects. This Ample Quantity Ensures You Have Enough Rivet Nuts For Replacements And Continuous Use. Efficient And Secure Design - The Multi-grip, Pre-bulbed, Flat Head, And Knurled Body Design Of The Rivet Nuts Ensure A Stable And Secure Fit. This Design Allows For Easy Installation And Reduces The Likelihood Of Rotation, Ensuring A Stronger Fixation With Minimal Installation Effort. Easy To Install - Pre Drill A Suitable Hole According To The Size Of The Rivet Nut Installation Hole, Then Insert The Nut And Tighten It With Rivnut Tool. The Simple I