2PCS Lightweight Derailleur Adjustment Gauge Bicycle Derailleur Guide Tool Bike Maintenance

Label:Yes Chain Gap Gauge Function: The tool is intended to check the clearance between the derailleur guide pulley and the cassette during adjustment. Using the correct gap helps support smoother shifting and reduces the chance of chain rub or poor gear engagement.

Plastic Construction: Made from plastic in blue, the gauge is lightweight and suitable for regular bicycle workshop use. It measures approximately 81 × 36mm / 3.19 × 1.42in, making it easy to store in a tool kit or saddle bag.

Package Included: The package includes 1 rear derailleur adjustment tool. Please follow the derailleur manufacturer's setup instructions for chain gap, limit screws, and cable or electronic adjustment. Note: the title lists 2PCS, but the package contains 1 tool.

12-Speed Electronic Rear Derailleur Adjustment Tool: This plastic chain gap gauge is designed for setting the chain gap on compatible 12-speed electric rear derailleurs, including for R710, R7150, RX820, R8150, and R9250. It helps align the derailleur during drivetrain setup and maintenance. Please confirm your derailleur model before use. Road Bicycle Drivetrain Maintenance: Suitable for road bike drivetrain setup, derailleur replacement, and routine shifting adjustments. It is a practical accessory for home mechanics and bike shops working on compatible 12-speed electronic groupsets.

Item Type: 12 Speed Electronic Rear Derailleur Adjustment Tool Color: Blue Material: Plastic Product Size: 81*36mm(3.19*1.42in) Suitable for 12 speed electric rear derailleur for R710/R7150/RX820/R8150/R9250

Package Lise: 2 x 12 Speed Electric Rear Derailleur Adjustment Tool

Notes: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.