Smooth Comfordome handles fit the palm of the hand comfortably. -Handles are color-coded for easy identification. -Hollow shafts facilitate work on stacked circuit boards or other long bolt applications. -Internal flanges provide solid, twist-resistant shaft anchor. -Chrome-plated shaft helps prevent corrosion. -Standard length works for most applications. -Fits over long bolts and studs. -Opening Type: Hex. -Material: Chrome-Vanadium. -Finish: Nickel Chrome. -Type: Nut Driver.