This is a sixteenth note.
It lasts for one quarter of a beat.
There are four sixteenth notes in one beat.
There are 16 sixteenth notes in one bar of * time.
The following example contains a bar of sixteenth notes played on the snare drum. Use alternate sticking (RLRL and then LRLR) and remember to count out loud as you play. Once you have control of the pattern, try playing it with one hand only (RRRR and then LLLL). Although this is less common with sixteenth notes, it is used in more advanced drumming and is therefore worth mastering.
Now try moving between quarter notes, eighth notes and sixteenth notes. Keep the tempo consistent throughout regardless of the type of note being played.