Product Description M7 grade steel with extra hard titanium nitride coating and parabolic bit flutes for strength and maximum service in applications such as metal, wood and plastic; split point prevents walking. From the Manufacturer DeWalt's 3/8-inch reduced shank titanium drill bits have a titanium coating that provides longer life when drilling in non-ferrous metals. These bits are also suitable for drilling in wood and plastic and are ideal for commercial and residential applications.