These are authentic CCELL cartridges from Hamilton Devices.  They are available in either a white ceramic or black ceramic mouthpiece in either 0.5ml or 1ml capacity. 

Features and Specifications
510 Threading
Glass Tank
Ceramic Screw On Mouthpiece
Tank Volume:  0.5ml or 1.0ml

In The Box
1 Hamilton Devices CCELL 510 Thread Cartridge