This peptide pen saves so much time for your research purposes. You fill it one time, prime it one time (remove the air) and form then on its clean, place a new needle on the tip, adjust the dose and start your research. SO much faster than those insulin needles we usually use.
 
This purchase comes with (2) 3ml Vials that you will need for this dispenser. they are the same ammount of ml as the standard peptide vials, but shaped differently and work differently, your standard vials wont work you need these.
 
It also comes with (10) of the required 32g x 4mm needle tips.