Pre-owned DeWALT Black and Gold, Black Oxide 20PC set in hard protective case. 

Key Features
Material: High-Speed Steel (HSS), a general-purpose material suitable for various drilling applications.
Coating: Black and Gold Black Oxide. The black oxide coating is primarily for corrosion resistance and to help reduce heat buildup.
Tip Design: 135° Split Point Tip, which allows the bit to start drilling on contact and reduces "walking" or skating on the material surface.
Shank Design: Many of the larger bits feature a 3-Flats Shank to help reduce slippage and spin-out in the drill chuck.
Durability: The bits often feature a Tapered Web Design for increased durability and resistance to breakage.
Case: It comes in a hard, protective plastic case, often a version of DeWALT's ToughCase system, designed to keep the bits organized and secure.

Size (Fractional Inches): 

1/16" (3), 5/64" (1), 3/32" (2),  7/64" (1), 1/8" (2), 9/64" (1), 5/32" (1), 11/64" (1),

 3/16"(1), 13/64" (1), 7/32" (1), 15/64" (1), 1/4" (1), 5/16" (1), 3/8"11/2" (1)