Features: Enhances your 's functionality with our high quality window and vent knobs, crafted from ABS plastic for long lasting Performances and stability. These knobs feature a 2 1/4 inch outer diameter and a 1 inch shaft length, ensuring seamless compatibility with various Window and ventilation systems. Ideal for enthusiasts, maintenance personnel, and anyone needing reliable replacement parts for their Campers or trailer. Perfect for routine maintenance or emergency repairs during travels, these knobs offer a practical solution for maintaining your vehicle's ventilation and window mechanisms. With a sleek black design, these knobs not only provide a functional upgrade but also add a touch of elegance to your 's interior hardware setup. Specifications: Material: ABS Width: about 57mm/2inch Height: about 33mm/1inch Package Includes: 7pcs Window & Vent Knobs note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.