Unior Chain wear gauge

The perfect tool to ensure that your bike's drivetrain is always in top condition. Precision manufactured by laser milling from steel, this gauge shows the exact chain wear in areas where chain manufacturers generally recommend replacing the chain (0.5 % and 0.75 %). The 3-point shape of the gauge separates rivet wear from roller wear, providing accurate results. The QR code leads to the instruction video. The gauge is suitable for all 6- to 13-speed chains including flattop chains from SRAM. In general, 11- to 13-speed chains should be replaced before 0.5% elongation is reached, while 6- to 10-speed chains should be replaced before 0.75% elongation is reached.