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.
These high performance twist drill bits are available in three different materials and are suitable for all normal drilling in conventional materials.
Jobber drill bits are now available in High Speed Steel Cobalt Alloy (HSS-Co).
Metric drill bit sizes are now available in HSS and HSS-Co.
Use HSS, HSS-Co and HSS-TiN coated drills for:
These high performance twist drills are suitable for all normal drilling in conventional materials. High Speed Steel bits with 5% Cobalt alloy (HSS-Co5) and a black oxide surface treatment on the bevel decreases cutting forces and increases wear resistance of the bit.
Jobber Length Metal Drill Bits
21 or 29 Piece Jobber Length Drill Bit Sets