Yocan Evolve Plus XL vape coils are arguably the best wax coils on the market. They come with QUAD coil technology, which means there are 4 quartz rod coils built into the wax atomizer. When vaping with these coils, it can feel like you are taking hits from a dab rig. Coils tend to collect too much build-up and over time they won't get as hot as they used to. That's why it's important you buy these replacement vape coils.