The strength and durability of heat-treated screw and nutdriver bits make them a great choice for the demanding professional, and that dependability is exactly what you get in the DeWalt Screwdriving Bit Sets. The advanced hardening process used in the creation of these tools allows them to provide higher torque and improved driving power, so you get jobs done faster and more efficiently. And they come neatly packaged in a case, so you never end up sorting through the bottom of a big tool kit for a little bit tip.Features Bit Retention System Keeps Bits Secure Magnets allow case to be fixed to any ferrous surface Impact-resistant material helps to prevent breakage Built-in hooks for hanging case Shank Diameter: 3/8 in Width: 2 in Head/Tip Size: 1 - 2 in PH#2, 1 - 2 in SQ#2, 2 - 1 in SL#8, 3 - 1 in PH#2, 1 - 1 in PH#3, SQ#1, SQ#2, T25, 1-1/4 in, 5/16 in, 3/8 in Nutsetter Shank Type: Hexagon Bit Type: Screwdriver Height: 8.75 in Weight: 0.94 lbs Shank Length: 7.5 in Battery Included: No Product Primary Material: Steel Warranty: 1LW Power Source: Non-energy Using Country of Origin: China