However, we have longer estimates to compensate for the occasional delay or supply chain breakdown. We do not accept P. BOXES – PLEASE PROVIDE A PHYSICAL ADDRESS. We guarantee that your issue will be solved quickly. We usually respond within 24 hours on weekdays. Set of 29 jobber length drill bits includes inch sizes 1/16″ to 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 the drill bit and provides wear resistance Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging Meets ANSI specifications. Drill America – DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case – X. We advise you to use a reputable carrier service when returning your goods. Please check the Voltage information and make sure it matches the one in your country. In case it’s not stated in the description, do ask us.