The needle protrudes 1.5 mm from the pen, this determines how deep you go into the skin and is therefore important to keep a close eye on. The membrane in the middle catches the vibrations a bit and dampens the shock, which is milder for the skin. Also, this membrane is made of silicone so no blood can flow back into the machine.

Available cartridges: 1R 0.18 / 1R 0.20 / 1R 0.25 / 1R 0.30 / 1R 0.40 / 3RL 0.25 / 3RL 0.30 / 5RL 0.25