Feature Highlights: 1. Smooth & Precise Control: This B20K control board speed knob gives you smooth, accurate speed adjustment for your 20k drill, so you can work with better control during drilling tasks. 2. Durable Build: Made from tough, long-lasting materials, this replacement knob is sturdy and reliable—made to hold up over time without needing frequent swaps. 3. Easy Installation: Comes with washers and nuts for a quick setup. Replace your old knob in just minutes and get back to work. 4. Steady Performance: Engineered for consistent speed regulation, this knob helps your 20k drill deliver professional, reliable results every time you use it. 5. Great Value Set: Includes 2 replacement knobs with all needed accessories—a practical backup solution for salons or home users who depend on their UP200 drill handpiece. Product Details: Upgrade your drill with this B20K control board speed knob designed for smooth operation and precise speed control. Built from durable metal, it resists wear and ensures long-term reliability. The easy-install design includes washers and nuts for tool-free setup—simply swap your old knob in minutes. Ideal for maintaining consistent performance in professional or home drilling tasks. Specifications: - Color: As Shown - Material: Metal - Package Contents: 2 × B20K Speed Knobs with Washers and Nuts Only the items listed above are included. Other products are not part of the package. Note: Slight color variations may occur due to lighting and screen differences. Allowable size error: +/- 1–3 cm.