Klein Tools has designed a set of Impact Power Bits for the professional electrician. All the bits are made of high-impact rated S2 steel. The bit holder has a strong magnet and designed longer so they reach easily into junction boxes. You can find this bit extension along with different size and tip bits in our Pro Impact Power Bit Set with Case (Cat. No. 32799).Warnings Do NOT use to pry or chisel Read and follow safety instructions in power tool owner's manual Always wear eye protection Features Includes 1, 4-Inch (101.6 mm) power bit extension Standard 1/4-Inch (6.4 mm) hex shank Strong magnet keeps bits in place 4-Inch (101.6 mm) extension reaches easily into 3-3/8-Inch boxes S2 Impact-Rated Steel for maximum life Longer pro impact power bits are designed to reach easily into boxes and panels Can be found along other sizes and tips in the Pro Impact Power Bit Set (Cat. No. 32799) Strong Magnetic Hold Bit Extension Length: 4 in (101.6 mm) Shank Type: 1/4 in Hex Material: S2 Impact-Rated Steel Type: Impact Ready Diameter: 0.43 in (1.1 cm) Width: 0.45 in Height: 0.45 in Weight: 0.05 lbs Country of Origin: Taiwan DownloadsVideo DownloadSpec Sheet