Drill bits Smart365 19 pcs HSS Co set 1–10 x 0.5 mm

Smart365 19 pcs HSS Co drill bit set covers diameters from 1.0 to 10.0 mm in 0.5 mm increments, providing a continuous range of sizes for precise drilling operations. The bits are made from high-speed steel with cobalt alloying (HSS Co), offering enhanced wear resistance and better performance at elevated cutting temperatures. This set is intended for general-purpose metalworking and for drilling into other hard materials where dimensional accuracy and edge retention are important.

Advantages

The HSS Co composition increases hardness and thermal stability compared with standard HSS, reducing tool wear during high-speed or prolonged drilling. The 0.5 mm step increments ensure smooth size progression for reaming or pilot-hole strategies and simplify bit selection. The set’s compact range from 1.0 to 10.0 mm meets common workshop and maintenance needs while supporting precision tasks that require small diameter control.

Suitable for

• Drilling steel, stainless steel and other ferrous metals
• Machine maintenance and repair tasks
• Fabrication workshops and metalworking projects
• Creating pilot holes for screws and fasteners
• Precision drilling where incremental sizes are required

Key specifications

• Quantity: 19 drill bits
• Diameter range: 1.0–10.0 mm in 0.5 mm increments
• Material: High-speed steel with cobalt (HSS Co)
• Point geometry: general-purpose split or 118–135° style suitable for metal (exact angle may vary by bit)
• Typical applications: metalworking and other hard material drilling

How to use

Select the drill bit that matches the required diameter, secure the workpiece, and clamp the bit firmly in the drill chuck. Use appropriate cutting speed and feed for the material being drilled — lower speeds for harder metals, higher speeds for softer metals and non-ferrous materials. Apply steady pressure and allow the bit to cut; withdraw occasionally to clear chips and use cutting fluid when drilling metals to reduce heat and extend tool life. Start with a smaller pilot hole if precise centering or minimal wander is required, then step up through sizes in the set to reach the final diameter.

Usage recommendations

Use adequate personal protective equipment (safety glasses, gloves as appropriate) and appropriate cutting fluid for metal drilling. Store the bits in their case to prevent damage and maintain size order. For stainless steel and other high-strength alloys, use slower speeds, steady coolant flow, and intermittent pecking to avoid overheating and to preserve edge life.