The REV INDOOR was introduced in 2001. It was designed specifically for indoor flying, thus can be a bit difficult to fly if there is any wind.
The REV INDOOR became very popular in the year 2010 when Connor Doran flew some to the Semi-Finals on the USA Television show "America's Got Talent"
The REV INDOOR has also become popular in several stage and Ice shows. The rods deleivered with the first REV INDOOR were about 3/16" OD.
Somewhere around 2009 these rods were changed to about 1/4" OD.