Fully in-house designed & developed "Variable lever Ratio Control" gives you wider lever ratio adjust range (0.25mm per click, 8 clicks/max. 2mm adjust range), and helps you to find the most suitable brake feeling without being affected by different brake calipers. **Only glycol ether based Brake/Clutch fluid can be available. Please do not use silicon or mineral base fluid. Or it might cause malfunction or fluid leak.