Rio InTouch MOW Tip Medium The Medium MOW Tips feature T-11, with a sink rate of 8" per second, for the sinking material. Each of these tips has either a light green floating section, or if full sinking are a dark green color, for easy identification. The Medium MOW Tips are designed for heavily weighted flies and are ideal for Skagit lines between 475 and 575 grains. There are six unique tips that make up the series. The MOW "kits' contain one of each of the six MOW tips within a family. All InTouch MOW tips are printed with their size and tip ratio on for easy identification.