A7 Cartridges

Dr. Pen A7 cartridge buying guide
Match your Dr. Pen A7 device label, connector shape and pin count before adding cartridges to cart. Pin count alone is not enough because different device families can use different locking shapes.

Connector shape: compare the underside tabs and lock position before opening a sealed pack.
Pin count: A7 buyers should confirm the A7 label and connector shape before choosing 12 pin, 36 pin or nano options.
Single-use sterile reminder: use a fresh sealed cartridge for each session and do not reuse opened tips.
Shipping and returns: tracked shipping is available to the US, Canada and Australia; unopened wrong-model items follow the posted return policy.

Model label checklist | Connector shape guide | Read the fit guide