Kingpin Carts Oil is made in our own state-of-the-art manufacturing lab. It is distilled 5 times to give you a best quality products that passes strict tests. We then add a proprietary blend of terpenes to get the best taste. No PG, VG, PEG, or other extras. Kingpin batteries and cartridges have just small amount of the lowest failure rates in our hardware industry and our cartridges are engineered for smooth and constant air flow. In addition, our pens products have many voltage levels so you will allowed control your temperature settings and a pre-heat mode that allows you to warm up before hitting the oil.