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Shipping weight for this item is 7 ounces
The 1/4" Hex Extension is six inches in length, for those deep hard-to-reach spots. Used with the TightFit® drill bits provides the utility of an expensive set of "deep reach" extension drill bits. Used with the Right Angle Tool Attachment, the Extension allows work over/under or around obstacles. It is made of mild carbon steel (1144) and has a body diameter of 3/8", a head diameter of 5/8" and a shank diameter of 1/4" hex. It is black oxided to prevent corrosion while enhancing appearance.