Jacobs Chuck Key K2
JACOBS chuck keys have soft steel handles to limit the potential for dangerous fracturing under excessive load. The nickel thumb grip styles increase leverage and user comfort. The 3649D is a K2 key that is used on the 2 series chuck model.
Do not subject chuck key handles to hammer or other impact blows.
Never apply extensions, pliers, wrenches or ‘cheaters’ of any kind to chuck key handles.
Self-ejecting models with spring-loaded ejectors ensure key disengagement after tightening.
Soft steel handles limit the potential for dangerous fracturing under excessive load.
Nickel thumb grip styles increase leverage and user comfort.