[SIZE] - 8mm Diameter, 21.5mm Gear Diameter[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.
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