6E tracks EUR/USD in the same direction and with the same quoting convention as spot, which makes it the easiest currency future for a spot FX trader to adopt. Tick size is 0.00005, worth $6.25, half the size of a standard spot pip.
A micro version, M6E, covers 12,500 euros at $1.25 per tick, which brings the contract within reach of small accounts and allows finer position sizing than the standard contract's roughly $135,000 of notional.
Example: long one 6E at 1.0820, out at 1.0895. That is 150 ticks of 0.00005 at $6.25, or $937.50, equivalently 75 pips x 125,000 x 0.0001 = $937.50.
Related: currency-futures, yen-futures, major-pairs, micro-futures, pip