Drill Bit Set DeWalt DT70782-QZ — 10-piece HSS twist drill set

DeWalt DT70782-QZ — 10-piece HSS twist drill set provides a compact selection of high-speed steel twist drills designed for general metal and wood drilling. The set includes a range of commonly used sizes in a small, durable case for storage and transport. Intended for routine workshop and onsite tasks, these HSS bits deliver consistent cutting performance and wear resistance suitable for handheld drilling as well as drill-press use.

Advantages

The DeWalt 10-piece HSS set combines material hardness and edge geometry to maintain cutting speed and reduce wear during repetitive drilling. The twist-flute design ensures effective chip evacuation, while precise manufacturing tolerances help achieve straighter holes and longer tool life. The compact case keeps bits organized and protected, making the set convenient for both mobile technicians and bench work.

Suitable for

• Drilling holes in various metals such as mild steel and non-hardened alloys
• Drilling in wood and wood-based materials for carpentry and joinery
• General maintenance, repair and installation tasks
• Use with handheld drills and drill presses for routine workshop work

Key specifications

• Material: high-speed steel (HSS) suitable for general-purpose drilling
• Type: twist drill bits with standard 118–point geometry for metal and wood
• Set size: 10 pieces covering a range of commonly used diameters
• Finish: raw/black oxide or untreated HSS surface for corrosion resistance during storage
• Packaging: compact plastic case for organization and transport

How to use

Select the appropriate drill diameter for the hole required and secure the workpiece to prevent movement. Fit the chosen HSS twist bit into the drill chuck and tighten securely. Start drilling at low speed to establish the hole, then increase speed as appropriate for the material and diameter. Use cutting lubricant when drilling harder metals to reduce heat and extend bit life. After use, clean chips from the flutes and return bits to the case to protect cutting edges.

Usage recommendations

For best results, match drill speed and feed rate to the material being drilled; lower speeds and cutting fluid are recommended for harder metals. Replace bits when wear or chipping affects hole quality, and keep the set stored in its case to prevent damage and corrosion.