Besttoolifes Bicycle Rear Derailleur, Elliptical Bike, CNC Single Speed Rear Derailleur, Mountain Bike Chain Tensioner 7/8/9/10 Speed Rear Derailleur, Road Bike Rear Derailleur(Blue)

• 【 Material】Constructed with and practical material, long-lasting and reliable performance.
• 【Effective Chain Tension】Designed as a single speed converter chain guide, it provides an efficient and adjustable for tensioning a single speed system.
• 【Compatibility】Suitable for converting 8-12 speed bikes to a single speed, perfect for bikes with hanger dropout frames.
• 【Floating Pulley】Features a floating pulley adjust wheel, allowing for precise chain tension adjustment.
• 【Lightweight Design】Made from aluminum alloy, it is lightweight and adds minimal weight to your bike.

Description: * *Made of material, and practical to use *Bike Bicycle Chain Tensioner Single Speed Converter Chain Guide Anti-Drop Link *Designed to provide a simple, effective and adjustable way to tension a single speed *Converts 8-12 speed bike to a single speed for hanger dropout frame *Floating pulley adjust wheel for perfect chain tension Specification: Material: Aluminum alloy Color: Black/Red/Blue/Purple (As Pictures Show) Weight: About 140g Package Includes: 1 x Chain Tensioner