RIO’s iMOW tips have an intermediate section, instead of a floating, which creates a smooth depth transition between a floating body and fast sinking tip, and perfect contact between the angler and the fly, they are also the ideal tip for intermediate based Skagit heads, like RIO’s iFlight.
Light iMOW Tips feature T-8 for a sinking section (with a sink rate of about 7” per second) and are most suitable for Skagit lines of 475 grains and less.