6-Piece Heavy-Duty Nut Driver SetFeatures:Through-handle, full-hollow shaft for torquing hex nuts onto threaded rod of any lengthColor coding for easy identification of different sizesWrench assist for additional torqueRare-earth magnetic tip holds nut in place while fasteningHeavy duty handles and shafts exceed the torque performance of regular nut driversIncludes: 1/4", 5/16", 3/8", 7/16", 1/2" and 9/16" hex sizesSpecifications:Application: Nut driving on unlimited bolt lengthsShank Material: SteelTip Type: MagneticSet Contains: 1/4", 5/16", 3/8", 7/16", 1/2" and 9/16" Hex Nut DriversSpecial Features: Wrench assist for greater torqueWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.