The HD-Series Screwdrivers are used with the HDC30i and HDC40i Hybrid Controllers.
Screwdrivers: HD012, HD025, HD035, HD045, HD060, and HD080 are used with the HDC30i Controller which has an output of 30V DC.
Screwdrivers: HD150, HD220, and HD450 are used with the HDC40i Controller which has an output of 40V DC.
The controllers are sold separately from the screwdrivers.