Description:During the tightening process, it serves to increase the torque input, so the chuck has a high holding force.It is used to adjust the tightness of bits for electrics, hand-springs, presses,, impacts, lathes, electric hammers, right-angles, flexible shaft electrics and so on.Notice: Measure the wrench hole size of the chuck and purchase the appropriate chuck key according to the actual required size.Specifications:Pilot Diameter: 8mmTeeth Quantity: 11Gear Diameter: 20mmTotal Size: 83 x 48mm / 3.37" x 1.89" (L*W)Package Contents:1 x Chuck Key.
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