The UTank Sub-Ohm tank is a budget tank that doesn't compromise! A knockout unit that packs a serious punch in a small package and budget busting price! The UTank takes 0.5 ohm coils best suited to 20 to 30w! With its fuss free easy to disassemble design, this tank makes it a breeze to vape! With adjsutable bottom airflow, top fill design, and a high quality coil head, this tank pund for pound is one of the best!