Jacobs 1/2 in. x 5/8 in. Chuck Key with 5/16 in. Pilot

Jacob’s 1/2 in. and 5/8 in. has self-ejecting models with spring-loaded ejectors ensure key disengagement after tightening. A soft steel handle limits the potential for dangerous fracturing under excessive loads. The nickel thumb grip style increases leverage.

• Never apply extensions, pliers, wrenches or ‘cheaters’ of any kind to chuck key handles
• Do not subject chuck key handles to hammer or other impact blows
• Provides user comfort
• Reliable
• Used on 1/2 in. and 5/8 in. chucks
• Used on 1/2 in. and 5/8 in. chucks