Description: Material: Made of steel and ABS material, with metal threads and spring pins, clear texture, exquisite workmanship, sturdy and durable. Matches well with your fitness equipment. Design: Mini pull pin spring knob, small in size, light in weight and does not take up space. Easy to store and easy to carry. The knob has a built-in spring handle that won't scratch your hands with use. Easy to Install: Installation is convenient and fast. You can easily adjust and fix your fitness equipment and solve your fitness equipment problems. Wide Applications: Adjustment Fitness Pull Pin Knobs are suitable for most home fitness equipment, such as exercise bikes, bicycles, strength equipment, and fitness equipment. Note: Please confirm the size you need before purchasing. We will provide you with fitness pull-pin knobs of different sizes to meet your needs. Specification:Material: Steel and ABSColor: BlackScrew Diameter: M10 x 1Screw Length: 7 mm / 0.28”Total Size: 35 x 25 mm / 1.38“x 0.98”(L*W)Package Content: 2pcs x Pull Pin Spring Knob Replacement Parts