1. [Technical Use] Bicycle Spoke Spanner Is An Essential Tool For Calibrating Bicycle Rims When You Are Tightening, Removing And Installing Bicycle Wheel Spokes. It Is Used To Adjust The Tightness Of Spokes To Prevent Wheel Deformation, And Is An Indispensable Workshop Tool 2. [6-In-1 Size] Round Bicycle Spoke Wrench Is Suitable For Size 10/11/12/13/14/15g Spoke Caps. Fit Size (Sae): .127 Inch, .130 Inch, .136 Inch, .156 Inch, .173 Inch, .197 Inch. Joint Size (Metric): 3.23mm, 3.30mm, 3.45mm, 3.96mm, 4.40mm, 5.00mm 3. [Quality Material] Made Of Super Tough 9H Hardness Hardened Steel Material With Chrome Finish, The Top Is Designed With Non-Slip Texture, And Not Easy To Damage 4. [ Application] Spoke Spanner Is Comfortable To Use, And The Spoke Tool Is Compact And . Used To Adjust The Tension Of Bicycle Spokes Or Electric Car Spokes, It Is An Indispensable Tool For Cyclists Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.