9pcs Chain Tightener for Folding-Bicycle Prevent Falling Adjust Tool

Usage Tips: When Installing The Tensioner, Ensure The Pulley Contacts The Lower Part Of The Chain (Non-Drive Side) And Adjust The Spring Tension Until The Chain Slack Is Moderate—Neither Too Tight Nor Too LooseMaterial: Aluminum AlloyColor: RedScrew Dimensions: 5.3x2.5cm/2.09x0.98''Quantity:9pcsNotice:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Picture just as a reference.the actual delivered goods shall prevail2. Please allow 0-1inch deviation exists due to the different measuring way

• Maintain Optimal Chain Tension: This Tensioner Automatically Adjusts To Eliminate Chain Slack, Preventing Single-Speed Bike Chains From Derailing Or Skipping, Ensuring A Reliable And Quiet Riding Experience
• Easy Installation: The Spring-Loaded Mechanism And Simple Installation Design Allow For Quick Setup And Fine-Tuning Without The Need For Specialized Tools Or Mechanical Knowledge
• Compatible With Standard 3/8-Inch Solid Axles: Designed To Fit Common Axle Diameters On Many Bmx, Mountain Bikes, And Urban Single-Speed Bikes, Making It A Versatile Upgrade Or Replacement Component
• Materials: Constructed From Robust And Durable Materials, Wear-Resistant, And Provides Reliable Function Under Various Riding Conditions And Impacts
• Slim And Discreet Design For A Stylish Bike Experience: The Compact Form Factor Blends Seamlessly With The Bike Frame And Drivetrain, Providing Essential Functionality Without A Bulky Or Obtrusive Appearance