• Corrects Rear Derailleur Lugs: This tool is designed to correct rear derailleur lugs, addressing many shifting issues, particularly with rear derailleur positioning systems
• Electrolytic Heat Treatment: Made from stainless steel, the body undergoes electrolytic heat treatment for high strength, corrosion resistance, and durability. It features a 360° rotation correction with CNC-turned threads and a plum rotation handle for easy adjustment
• Compatible with Multiple Wheel Sizes: Suitable for 20" to 29"+ wheels, this tool provides ample space to work around the wheel, making it versatile for all bike types
• Precision Thread and Sealing: The precision threading and excellent sealing ensure proper fit. The positioning knob rotates clockwise, allowing the bolt to lock securely into the rear derailleur fins
• Adjustable Sliding Bracket: Lock and press the sliding bracket button to adjust the distance between the measuring rod and the hub, measuring any deviation between the tail hook and the wheel rim
• 360° Swivel Rod: The swivel rod can rotate 360°, allowing for accurate measurement between the wheel rim and tail hook to correct any misalignment
• O-Ring Positioning for Accuracy: Move the measuring rod to touch the wheel rim, then position the O-ring by pressing the sliding bracket flush and moving the O-ring for precise adjustments

Specifications:

• Model: RR9165
• Material: Stainless Steel
• Function: Used to correct the rear fins have solved many transmission gear shift problems, especially the rear positioning gear shift system.