Adjustable needle length: 0.25mm-2.5mm
You can adjust the needle length according to your derma pen.
It could be used on eyelash,eyebrow, face or lips.
1/3/5/7/ pins used for PMS(Permanent Make-up System)eyelash, eyebrow, face or lips.
9/12/24/36/42 pins used for MTS (Microneedle Therapy System)
Nano needle(square&round) using the advanced biological nano meter, more safe, no harm to skin, Painless, non-invasive.