[SIZE] - 8mm Key Diameter, 21mm Gear Diameter, 11T. [FEATURE] - Durable and long-lasting, T-shaped grip for easy use. [FUNCTION] - During the tightening process, it acts to increase the torque input, so the drill chuck has a high clamping force. [APPLICATIONS] - It can be applied to the drill chuck of compatible electric tools such as electric drills, impact drills, hammer drills and drilling machines. [NOTICE] - Measure the size of the wrench hole in the drill chuck and use the appropriate drill chuck key for tightening.
