Chicago Latrobe 559 Series Cobalt Steel Short Length Drill Bit Set In Metal Case, Gold Oxide Finish, 135 Degree Split Point, Inch, 29-piece, 1/16″- 1/2″ in 1/64 increments. Set of 15 short length drill bits includes inch sizes 1/16″ through 1/2″ in 1/64 increments. 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. Chicago-Latrobe 559 Series Short Length Drill Set in Metal Case – Sizes in Set: 1/16″ – 1/2″ x 32nds; Number of Tools: 15; Material : HSS; Point Angle: 135 Degrees; Finish/Coating: Gold Oxide Finish. Please wait for the result of cancellation. The order will be processed and completed by automatic warehouse system within 5 minutes. Sending direct message to cancel the order is not allowed for every case. For the return case. We try our best to make sure every customer is completely satisfied. If there’s a problem, feel free to message us! – We’re happy to help.