The pull pin spring knob is a must-have for any fitness enthusiast looking to maintain their gym equipment. Its construction and easy-to-use design make it suitable for various applications, including barbell holders and fitness weight block pins. Simply to adjust the equipment, then rotate the knob to secure it, making a smooth and Quick workout session. Features -Color:Black yellow -Material:ABS -Size:7.80X5.80X5.80cm/3.07X2.28X2.28in -Convenient adjustments: the ballshaped rotating pull pin design makes it easy to make quick adjustments, enhancing the overall workout experience -resistance: the spring knob pull pin allows you to adjust the tension, providing a tailored workout use for different fitness levels -Versatile use: compatible with a variety of fitness equipment, including cable machines and indoor bikes, making it a valuable addition to any gym -Sturdy: constructed from materials, this pull pin spring knob is designed to withstand regular use and provide performance -Simple and intuitive: the easy to use design makes that install and operate the pull pin spring knob with minimal effort Package list: 1 x fitness equipment head pin