Eureka won the award for best CO2 Concentrate at the Hempcon Cup 2015. 500 mg of Indica Cannabis oil. 100% natural, solvent and additive free CO2 extracted cannabis oil. Compatible with 510 thread batteries. – Fast and Friendly offers 24hr 100% replacement for any factory defects, Replacement is for product to same product received. NO cash back, NO instant credit. Fast and Friendly does NOT replace EMPTY oil cartridges or cartridges that have malfunctioned due to patient error/mistreatment.