Featuring a durable ball head design, this pull pin knob is ideal for fitness enthusiasts looking to maintain their exercise machines. The spring-loaded mechanism allows for easy adjustments and secure locking, making it suitable for various fitness equipment. Its ergonomic design ensures comfortable handling, enhancing your overall workout efficiency and safety. Features -Color:Black -Material:ABS -Size:8.50X5.00X5.00cm/3.34X1.97X1.97in -Enhanced stability: the pull pin knob structure reinforces equipment stability, ensuring a safer and more practical workout session -Effortless adjustment: springloaded mechanism simplifies adjustments, saving time and effort during equipment setup or modifications -Universal application: ideal for treadmills, exercise bikes, and other fitness machines, offering a versatile solution for fitness enthusiasts - build: made with durable abs material, this knob withstands regular use and minimizes maintenance requirements -Seamless integration: precision-crafted to match various fitness equipment models, ensuring a ideal fit and improved functionality Package list: 2PCS/set x Fitness equipment pin