Description: 【Sturdy Construction】: This M8x1.25 pull pin knob knob features a sturdy combination of plastic and iron, ensuring long term durability and reliable performance for your fitness equipment needs. In size 5.1 cmx4.94 cm/2.01 inchx1.94 inch 【Versatile Compatibility】: Designed to fit most exercise bikes, fitness equipment, and weight benches, this M8x1.25 threaded knob is great for a wide range of applications in the gym or at home 【Portable Design】: The compact and lightweight structure of the universal pop pin makes it easy to handle, while the built bolt handle ensures a grip without scratching your hands during adjustments 【Quick Installation】: Enjoy easy installation with this replacement fitness pin that is simple to set up, saving time and effort while providing convenience in storage and portability 【Comprehensive Package】: Each purchase includes 1 pull pin knob, specifically designed for securing bike components, making it an essential accessor Specification: Material: Plastic Iron Thread Specification: M8x1.25 Size Chart: 5.1 cmx4.94 cm/2.01 inchx1.94 inch Package Includes: 1 Pull Pin Knob Note: Please allow slightly errors due to manual measurement and different monitors.