Twist drill bit Irwin 10502027 — diameter 1.8 cm, for rotary hammer, 1 pc

Irwin 10502027 is a single twist drill bit designed for use with SDS rotary hammers, with a drill diameter of 1.8 cm and supplied as one piece. The bit features a patented extra-short carbide tip and a new single-flute profile that together improve chip evacuation, reduce clogging and speed up drilling in concrete and masonry. The shank is compatible with SDS rotary hammers and the tip is brazed at high temperature for enhanced heat resistance and long life.

Advantages

The patented extra-short carbide tip concentrates approximately 80% of the workload on the head, enabling more aggressive concave cutting angles and self-centering behavior for easier control. Brazing at around 1000° Celsius with a bronze brazing paste produces a robust bond between tip and body, increasing durability. The single-flute design provides about 28% greater capacity for waste removal, clearing dust directly into the flute and reducing the risk of clogging. Combined, these features deliver up to 20% faster drilling while maintaining durability.

Suitable for

• Drilling holes in concrete for anchors and dowels
• Creating fixings in masonry and brickwork
• Professional and DIY rotary-hammer drilling tasks requiring a 1.8 cm bit

Key specifications

• Type: Twist drill bit with single flute
• Drill diameter: 1.8 cm
• Overall length: 210 mm
• Tip: Extra-short carbide tip, brazed at high temperature
• Flute: Single flute for improved chip evacuation
• Suitable materials: Concrete, masonry
• Compatibility: SDS rotary hammer shank
• Quantity: 1 piece

How to use

Install the bit into an SDS-compatible rotary hammer according to the tool manufacturer’s instructions, ensuring the shank is fully engaged and locked. Select the appropriate drill mode and apply steady forward pressure; the patented short carbide tip and single flute will assist with self-centering and efficient dust removal. Periodically withdraw the bit during long holes to clear accumulated debris and allow the tip to cool, especially when drilling deep or in abrasive materials.

Usage recommendations

Use appropriate personal protective equipment (safety glasses, gloves, hearing protection) and a dust extraction system where possible. For best performance, match hammer speed and impact settings to the material being drilled and avoid excessive force that can overheat the tip. Replace the bit when wear reduces cutting efficiency or when the tip shows signs of damage.