Cobra Extracts Vape Cartridges are SC Labs Tested. All their cartridges are labeled to contain between 60 – 70% THC but lab tests show results to be upwards of 75% for all the hybrid vapes. These extracts are free of harmful solvents, glycols, and glycerin. The pen comes fully charged. No cables and no waiting. This single use battery with one pull and it is ready to go.