Klein 5-in-1 Impact Socket NRHD5 in 1 Impact Socket NRHD 5 in 1 Impact Socket features three square socket sizes: 3 4 Inch, 1 Inch and 1 1 8 Inch, and small and large alignment slots Alignment slot to tighten and loosen most pole hardware 7 16 Inch hex quick change adapter included Fine tuned ball tip provides improved retention, minimizing drops 13 16 Inch diameter, 6 Inch (15. 2 cm) long hollow shaft allows use on long threaded bolts Engineered for use with impact drivers Color