If you are looking for a professional surround knob for soft-top window frame, then your research is over here. That’s because our product can meet your need. Adopted of durable stainless steel and nylon, it is practical and durable for long time use. It is not easy to get deformed and bring you much convenience. Features -Color:Black -Material: Stainless steel, nylon. -Size: About 9.25X4.50X4.50cm/3.64X1.77X1.77in. - Adopt precision-produced window frame pin knob, which enhances stable performance and high reliability. - Surround mounting knob pin has less groves then original knobs for better grip. - The installation method is simple and will not take you too much time. - The clever knob design makes it have a simple operation method, saving time and effort. - Professional manufacturing, high precision, strong reliability, to ensure safe use. Package list: 2 x Window Frame Long Knobs