Designed for durability and ease of use, the fitness equipment accessory spherical rotating pull pin spring knob is compatible with a wide range of gym machines. From indoor bikes to weight benches, this knob provides a quick and secure way to adjust your equipment. To use, insert the pin, adjust the height or position, and rotate the knob to lock it in place, making performance. Features -Color:Black yellow -Material:ABS -Size:7.80X5.80X5.80cm/3.07X2.28X2.28in -Easy and quick adjustments: the ballshaped rotating pull pin design allows for fast and Quick adjustments, improving the overall workout experience -Adjustable tension control: the spring knob pull pin provides adjustable tension, allowing you to the resistance to suit your workout needs -Multifunctional: suitable for use with a wide range of fitness equipment, including weight benches and rowing machines, making it a versatile choice -Ideal for home and gym use: Suit for both home and commercial gym settings, making flexibility and convenience for different workout environments -installation: the simple installation process makes that you can quickly set up and start using the pull pin spring knob without any complications Package list: 5 x fitness equipment head pin