550 Series Jobber Length Drill Set with Metal Case – Sizes in Set: A – Z; Number of Tools: 26; Material Type: HSS; Point Angle: 118 Degrees; Finish/Coating: Gold Oxide Finish Set of 26 jobber length drill bits includes one each of letter sizes A through Z Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials Gold oxide finish lubricates and provides wear resistance on ferrous materials Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging Extra thick web for increased strength and rigidity compared to standard drill bits Made in the USA.