Specification Binding : Unknown Binding Brand : Keyfit Tools Label : Keyfit Tools Manufacturer : Keyfit Tools MaterialType : steel PackageDimensions_Weight : 0.59965735264 PackageDimensions : L:11.99999998776 X W:0.99999999898 X H:0.99999999898 ProductGroup : Home Improvement ProductTypeName : DRILL_BITS Publisher : Keyfit Tools SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/41FOge6ra+L._SL75_.jpg SmallImage_Width : 75 Studio : Keyfit Tools Title : Hex Extension 7/16 Inch X 7/16 Inch X 12" Long For 1/2" Drills 7/16 Male Hex End X 7/16 Female Hex End With Set Screw 12 Inch Long Double It Up For 24" Works With Hex Augers, Hole Saws & Drill Bits Weight : 0.6 WeightUnit : pounds