Enhance your fitness equipment with this durable pull pin knob, designed for use with treadmills and exercise bikes. The spring-loaded ball head ensures a secure fit and easy adjustments, making it an essential replacement part for maintaining your machine's performance. Its durable construction assure durability, providing a reliable solution for your fitness needs. Features -Color:Black -Material:ABS -Size:8.50X5.00X5.00cm/3.34X1.97X1.97in -Ergonomic design: the ball shaped knob offers a comfortable grip, making adjustments smooth and easy during workouts -Quick release function: spring pull pin design enables rapid installation and removal, catering to environments -Multiequipment use: compatible with treadmills, cycling machines, and other gym equipment, enhancing overall usability -durable construction: durable abs material ensures durability, reducing wear and tear even with frequent use -Brandcompatible fit: engineered for universal compatibility, this knob integrates effortlessly with diverse fitness equipment brands Package list: 2PCS/set x Fitness equipment pin