No they are not dangerous, as long as you have read and understood our cleaning and disinfection guidelines.
For liability reasons, we do not sell anything dangerous. The last thing we want is to get sued for damages or get a ruined reputation. It would not make a big difference in profits for us, if we would not sell 2 mm dermastamps. If they would pose a risk, we'd omit them from our assortment and we'd still have 50 products left. However, we know from many years of experience that 2 mm dermastamp have never resulted in infection - not with our customers nor with anyone else, as far as we know from reading dermarolling forums and professional literature. If you're wondering whether 2 mm needles can damage nerves: They can't, those reside deeper. Just don't stamp the skin near your eyeballs. Follow our instructions and you'll be fine.
BTW, the reason why a dermaroller is perceived as more painful is because it makes many more pricks per unit of time than a dermastamp does.
For example, during one second, you insert the dermastamp (that has 35 needles) in and out the skin only once - this is 35 pricks in the skin per second. A dermaroller is rolled approximately once around its axis during one second - which means 180 pricks per second.
180 compared to 35 pricks a second is a big difference in pain level.
I always advise (especially to beginners) to start with shorter needles and when you get experienced and when your instruments get blunt, go for a longer size with your next purchase if you wish. A 1.5 mm size is very often completely sufficient.
You have not attached pictures.. If you attach pictures, I can say more.