10Pcs Needles Cartridge 18/36/42/ Round Nano Pin Anti-Backflow Bayonet Heads with Chip-Controlled For Dr Pen M9(ONLY M9 Use）

Features:
Item: Dr. pen M9 needle type
Needle Type: K7-18 pin, K5-36 pin, K5-42 pin, K5-Round nano
Quantity of needles: 10 Pieces needles, not including Dr pen M9 machine (Come in 1 needle type )
Needles adjustment :Adjustable
Consumables material: stainless steel
Valve cartridge design: prevent backflow
It is hygienic,convenient,and safe.

Notice:
These needles are specially Work for ONLY Dr.pen M9