Drill Bit Set AWTools AW40960 — HSS AICrN black, 3 pcs: 4–12 mm, 4–20 mm, 4–32 mm, plastic case

AWTools AW40960 drill bit set contains three high-speed steel (HSS) twist drills with AICrN black coating, supplied in a compact plastic case. The set includes drill sizes that cover a wide range of standard holes: 4–12 mm, 4–20 mm and 4–32 mm. These HSS AICrN bits are intended for metalworking and general-purpose drilling where improved wear resistance and thermal stability are required. The plastic case keeps the bits organized and protected during storage and transport.

Advantages

The AICrN (aluminium chromium nitride) coating on HSS substrate provides enhanced hardness and reduced friction compared with uncoated HSS, which leads to longer tool life and improved performance at elevated temperatures. The selection of three multi-range bit sizes reduces the need to change tools frequently and simplifies hole preparation across different diameters. The included plastic case offers convenient storage, easy transport and protection from moisture and impact.

Suitable for

• Drilling holes in steel and other ferrous materials
• General workshop drilling and maintenance tasks
• On-site jobs where a compact, protected drill set is required
• Holes in non-ferrous metals and some harder plastics

Key specifications

• Material: High-speed steel (HSS)
• Coating: AICrN (aluminium chromium nitride), black
• Included size ranges: 4–12 mm, 4–20 mm, 4–32 mm
• Quantity: 3 twist drill bits
• Storage: Plastic case for organization and protection

How to use

Select the drill bit range that best fits the target hole diameter and mount the bit securely in the drill chuck. Start drilling at low speed to create a guide point, then increase speed appropriate to the material being drilled while applying steady, moderate pressure. Use cutting fluid or coolant when drilling steel or other metals to reduce heat and extend tool life. After use, clean the bits to remove chips and coolant residue, then return them to the plastic case for storage.

Usage recommendations

For optimal life and performance, use the AICrN-coated HSS bits with appropriate cutting speeds and lubrication for the material. Avoid excessive feed force and overheating; pause periodically when drilling deep holes to clear chips and allow cooling.