A. This is a knob specifically designed for the handwheel adjustment of car seats. It has good adaptability and can be installed on the seat handwheel adjustment systems of new and old models of Sagitar, Bora, Golf 6, Magotan, and Santana 3000. B. In terms of design, this knob is carefully crafted. It has fine workmanship and a reasonable structure, ensuring a perfect fit with the vehicle seat handwheel adjustment system. It not only improves the operational comfort, allowing you to adjust the seat more easily and smoothly, but also is stable and reliable during use, effectively avoiding loosening or shaking. C. In terms of usage, it is mainly used for vehicle seat adjustment. When you want to adjust the position and angle of the seat to get a more comfortable driving or riding experience, this knob can play an important role. It allows you to easily move the seat back and forth and adjust the tilt according to your needs, providing more convenience and comfort for your travel. D. Whether it's for daily commuting or long - distance travel, it can be a practical helper for you to adjust your car seat and keep you in a comfortable sitting position.