Our offices will be closed on Monday, May 28th in observance of Memorial Day
FedEx shipped orders placed before 6:00PM ET on Friday, May 25th will ship same day (if paid for by Credit Card or PO account in good standing & based on product availability). Orders placed after the Friday cutoff will ship on Tuesday, May 29th. Please see our Business Policies for earlier shipping cutoff times for drop-shipped items and shipping by other carriers.
Technical Info for Jobber Length Drill Bits (HSS-Co 5) - Inch & Metric size
RUKO jobber length twist drill bits provide fast and clean cutting for a variety of materials such as steels, irons and aluminum alloys. Fully ground for more precise concentricity, these 5% cobalt high-speed steel (HSSE-Co5) drill bits are available in sizes up to 1/2 inch (Imperial) or 13mm (metric), and are the best choice for difficult stainless steels.