Ever gone to your accessory stash and found empty packaging? That doesn't have to ever be the case again! Grab the Yocan Evolve -D Plus Dry Coil 5 pack and stay ready. The Evolve-D Plus elements are constructed from stainless steel with a resistance of 1.0 Ohm. Use coil up to 15W, but any higher and you risk damaging the coil.