Feature:1. Wide Applications: This pull pin spring knob has a wide range of applications and can be used for exercise bikes, strength equipment, fitness equipment, some weight tables, etc.2. Built In Spring Handle: This pull pin spring knob replacement has built in spring handle, which will not scratch your hand due to winding, saving time and effort.3. Easy Installation: The exercise bike locking pin is designed for easy installation and can be quickly attached to your fitness equipment, allowing you to start your workout without any hassle.4. Good Compatibility: The exercise pull knob is compatible with popular fitness equipment brands like for Sunny, for PooBoo, for L Now, for Snode, for Exerpeutic, for Pleny, for Yosuda, for Ativafit, and for Faafuu, expanding its applicability and versatility.5. Sturdy And Wear Resistant: This fitness pop pull pin knob is made of excellent iron and plastic materials, which is hard and wear resistant, not easy to damage and has a long service life.Specification:Item Type: Pull Pin Spring KnobMaterial: Iron, Plastic.Package List:5 xPull Pin Spring Knobs