The machine that these cartridges are compatible with can be found here.

These are cartridges for the Brow Shop Digital Cosmetic Tattoo Machine. Each box contains 15 cartridges and the description for the machine is as follows:

The EXY Fully-Digital Cosmetic Tattoo Machine has been manufactured in South Korea since 2014, and is still a fully Korean-manufactured machine.

The machine is capable of accepting 8 different cartridges including nano cartridges, shaders and flat cartridges. The complete needle description and pricing is detailed in the table below.

This beautiful machine has a lightweight high-grade aluminium construction with a matte black finish. It's capable of running at 9 speeds, from slow speeds for ombre and powder effects to higher speeds for nano and line work, all with a digital speed indicator on the upper portion of the machine. The needle depth is also fully adjustable from zero to 3mm.