I did not know that 7 speed cassette sprocket of SRAM can be disassembled and cleaned up. . . . Read more
Attempted to install COCOA which is the application uses Bluetooth to detect and record suspected close contacts between users. If the contact is diagnosed with COVID-19, the user will be notified. After receiving the notification, the user can consider self-isolation or go to a medical institution for treatment. . . . Read more
