Hakko FT-710 is a tip cleaner that needs to be used with an iron holder. It should not be used as an iron holder nor should the soldering iron be left inside for more than the time it takes to clean the iron.
Iron holders can be used with the FT-710 Tip Cleaner in 2 combinations.
Combination A
Combination B
Hakko FH-101 (FX-950)
Hakko FH-200 (FX-951)
Hakko FH-201 (FX-952)
Other models of iron holders can simply be placed next to the FT-710
Note: Do not leave the soldering iron in the FT-710 when both devices are switched on as it will burn the tip.