The finest nut driver ever made. Meets or exceeds applicable ASME/ANSI specifications. Cushion grip handle allows for greater torque and comfort. Premium chrome plated shaft for smooth feel and corrosion resistance. Full hollow shafts facilitate work on stacked circuit boards or other long bolt applications. Internal flanges provide solid, twist resistant shaft anchor. Patented Tip-Ident® quickly identifies nut driver and size, handle end is also color coded for easy identification.Available in the following sizes:630-3/16; black color code; 3/16″ hex size; 3″ shank length; 6 3/4″ overall length.630-1/4; red color code; 1/4″ hex size; 3″ shank length; 6 3/4″ overall length.630-5/16; yellow color code; 5/16″ hex size; 3″ shank length; 6 3/4″ overall length.630-11/32; green color code; 11/32″ hex size; 3″ shank length; 6 3/4″ overall length.630-3/8; blue color code; 3/8″ hex size; 3″ shank length; 6 3/4″ overall length.630-7/16; brown color code; 7/16″ hex size; 3″ shank length; 7 5/16″ overall length.630-1/2; red color code; 1/2″ hex size; 3″ shank length; 7 5/16″ overall length.630-9/16; orange color code; 9/16″ hex size; 4″ shank length; 9 3/8″ overall length.630-5/8; yellow color code; 5/8″ hex size; 4″ shank length; 9 3/8″ overall length.