For gamers who want to practice for a longer time period (beyond preset timers), the space bar clicker with timer setting is the best option. This allows you to set your own time limit in seconds and the counter will run for exactly the same time period.
This feature is helpful when you know exactly how much you want to practice speed hitting. Also, if you are trying to set a record for a particular time period, you can use this spacebar counter.
The best part about this mode is that it remembers the timer you set last time and prefills it automatically. So you dont have to enter the custom timer every time.
Apart from that, you also leave the timer box empty in order to let the space bar clicker run infinitely unless you stop it manually by hitting the restart button.