This premium 13-Piece High Speed Steel (HSS) Twist Drill Bit Set is precision-engineered for tradespeople and demanding DIY enthusiasts. Crafted from industrial-grade carbon steel enhanced with premium alloys, these bits offer extreme heat resistance, exceptional hardness, and long-lasting edge retention.

• Premium HSS Construction - Engineered from robust high-speed steel for maximum toughness, wear resistance, and long service life.
• Specialist Tapping Sizes Included - Features critical 3.3mm and 4.2mm bits, the exact sizes required for prepping standard M4 and M5 screw threads.
• Multi-Material Versatility - Easily drills through alloy steels, sheet metal, iron, aluminium, brass, and PVC plastics.
• Efficient Spiral Flutes - Precision roll-forged spiral channels pull debris and chips up and away from the hole instantly to prevent overheating.
• Standard Straight Shank - Fully compatible with all corded and cordless 3-jaw drill chicks and bench drill presses.
• Heavy-Duty Storage Case - Comes in a robust, compact index case with clearly labelled slots for easy organisation, protection, and selection.
• Size Increments - 1.5, 2.0, 2.5, 3.0, 3.3, 3.5, 4.0, 4.2, 4.5, 5.0, 5.5, 6.0, 6.5mm.