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 Knob Material: Iron, Plastic. Package List: 5 x Pull Pin Spring Knobs