Drill bit set DeWalt DT7450 10-piece HSS for metal drilling

DeWalt DT7450 is a 10-piece HSS drill bit set designed specifically for drilling metal. The set contains ten high-speed steel bits in a range of common sizes, offering consistent cutting performance for general metalworking tasks. These bits are intended for use with handheld and bench drills and are suitable for workshop, maintenance and fabrication environments where reliable metal drilling is required.

Advantages

The HSS construction provides a balance of hardness and toughness appropriate for drilling a variety of ferrous and non-ferrous metals. Precision-ground flutes and points improve chip evacuation and reduce walking at startup, while the standard cylindrical shank ensures compatibility with most drill chucks. The compact 10-piece range covers frequent hole sizes used in general maintenance and repair work.

Suitable for

• Drilling holes in mild steel, stainless steel, aluminium and other common metals
• Workshop and industrial maintenance tasks
• Handheld drill and bench drill applications
• Metal fabrication, repairs and prototype work

Key specifications

• Material: high-speed steel (HSS)
• Number of pieces: 10
• Shank type: straight cylindrical shank for standard chucks
• Intended use: metal drilling (ferrous and non-ferrous)
• Compatibility: suitable for handheld and bench drills

How to use

Select the appropriate drill bit size for the hole required and secure it in the drill chuck. Mark the drilling point on the workpiece and, if necessary, use a centre punch to prevent bit wandering. Start drilling at low speed to establish the hole, then increase speed as appropriate for the material and bit size while applying steady, moderate feed pressure. Use cutting fluid or lubricant when drilling harder metals to extend bit life and improve chip removal. After drilling, clear chips from the flutes and inspect the bit for wear before reuse.

Usage recommendations

Use appropriate personal protective equipment (safety glasses and gloves) and clamp the workpiece securely. For harder materials or prolonged drilling, reduce speed, use cutting fluid and periodically withdraw the bit to clear chips. Replace bits that show significant wear, chipping or loss of geometry to maintain drilling accuracy and safety.