The Nova Hush 2 Pro 510 Thread Battery is the perfect choice for users looking for adjustable voltage and preheat features. It fits with most 510 Cartridges up to 11.5mm and can hold up to a 2gram Cart. The USB-C Cable and adjustable voltage of 3.0V for green and 3.8V for red, plus rainbow preheat settings make this battery simple to use and perfect for any 510 threading device.