Front Transmitter: It is the part that carries the front gear (crank) of the bicycle to different sized gear sets and shifts.

6/7V: This indicates that the transmitter is compatible with 6 or 7-speed systems.

So if you have a 6 or 7-speed cassette in the back of your bike, you can use this transmitter.

Tourney: Indicates that Shimano belongs to Tourney, the entry-level transmitter series.

Generally used in city bikes and lightweight mountain bikes.

Triple: It means that the pre-transmitter is a triple system, that is, it can work with a crank with three different sized gears.