Provides vibration resistant stability for indoor cycling and gym routines, supporting intensity interval training and use in commercial fitness centers. Quick and simple installation with a spherical knob pull pin, designed for easy assembly and compatibility with most bikes and exercise equipment; ideal for busy home gym users needing fast adjustments. Built from durable ABS with reinforced iron cores; ensures safe locking during intense workouts and ergonomic comfort for repeated use. Sweat resistant rotate mechanism and universal compatibility; delivers long lasting durability for seamless bike accessory upgrades. Key attributes Function: locking pin for bike accessories and attachments Material: ABS with reinforced iron cores Mechanism: sweat resistant rotate Compatibility: universal with most bikes and exercise equipment Performance: secure locking, durable under intensive use 23 use scenarios Scenario 1: In a commercial fitness center, HIIT classes use multiple bikes; quick pin changes allow fast switching of attachments between riders without downtime. Scenario 2: A busy home gym with several users; the spherical knob pull pin enables rapid height and accessory adjustments between sets. Scenario 3: A studio or gym performing bike accessory upgrades; universal compatibility supports seamless upgrades across different bikes and equipment.