A professional quality FIFTEEN piece set of magnetic nut drivers/setters with a 1/4″ hex shank drive. Manufactured from toughened Chronium CR40 steel for increased durability and longevity. Black Phosphate finish for resistance against corrosion. The length of each socket is 65mm and the sizes are etched on the side for easy identification. Drives nuts, bolts, screws and other fixings with a hexagon head. Fitted magnet holds the nut (fixing) in place for quicker installations. The 1/4″ (6.35mm) hex shank allows them to be used with Impact Drills/Drivers with quick release systems or with a suitable chuck. Eight metric drivers: 6, 7, 8, 10, 11, 12, 13 and 14mm. Seven SAE drivers: 1/4″, 9/32″, 5/16″, 3/8″, 7/16″, 1/2″ and 9/16″. All supplied in a handy clip shut carry case for neat storage and easy transportation.