GreenTank "Spectrum" 0.5ml 510 w/ 1.8ml Intake (Push Lock Cap)

Looking for a Do-It-Yourself 510 Cartridge? Look no further. We bring you the GreenTank "Spectrum" 0.5ml Refillable 510 Cartridge. Utilizing four (extra-large) 1.8ml intake holes these cartridges will haul huge clouds without drying out and burning your coil. At Greentank we use top of the line Food-Grade Ceramic donut technology for our coil and a polished Food-Grade metal and glass housing for a clean user experience. Heavy metal and child resistance certifications may be the most well known in the industry, but they are far from the only product certifications we obtain for our hardware. GreenTank's cartridges boast 24 compliance certifications in total.