Fangrui Product Details : 1. Comprehensive Cleaning Kit: Scratch Brush Pen Set Comes With Four Tools, A Glass Fiber Scraping Brush Pen, A Brass Brush Scraping Pen, A Steel Bristle Tool, And A Nylon Tip Tool, Providing Versatile Cleaning Solutions For All Your Needs. 2. Adjustable Tip Length: By Simply Twisting Cap, Users Can Easily Adjust The Bristle Length And Hardness, Providing Customized Cleaning Effectiveness For Applications. 3. Highly Versatile: Rust Removal Brush Pen Set Is Ideal For A Wide Range Of Tasks, Including Circuit Board Cleaning, Car Rust Removal, Watch Polishing, Dirt And Rust Removal, Car Debris And Scratch Removal, Ring Cleaning And And Other Jewelry. 4. Resilient And : Rust Cleaning Pens Are Made From Excellent Quality Materials Like Glass Fiber, Nylon, Steel, And Copper To Durability. The Glass Fiber Tip Is Specifically Designed For Repairing Paint Scratches And Battery Terminals. 5. Compact Storage: This Cleaning Brush Pen Set Comes With A Convenient Plastic Bag For Easy Storage Of The Scratch Bru