Twist drill bit, Irwin 10501925, 6 mm diameter

Irwin 10501925 is a 6 mm twist drill bit designed for rotary drilling in a wide range of common materials. It is intended for use with hand drills and drill presses at low RPM, making it suitable for cordless, low-speed multi-purpose drilling tasks. The bit features a four-facet ground carbide tip that improves centring and reduces required drilling pressure, and it is designed to perform cleanly on materials such as brickwork, wood, plastics, sheet metal and ceramic tiles when used in rotary mode only.

Advantages

The four-facet carbide tip provides improved centring and reduced walking at the drill start, lowering the risk of slipped holes and improving hole accuracy. Its twist geometry and cylindrical shank make it compatible with standard chucks and fixtures, and the design supports controlled drilling at lower RPMs typical for cordless tools. The bit's construction allows effective drilling in a variety of substrates including masonry, tile, metal, wood and plastics when used without hammer action.

Suitable for

• Drilling round holes in brickwork and masonry (rotary drilling)
• Drilling ceramic tiles and hardened floor tiles without walking
• Drilling through sheet metal and thin metal panels
• Drilling wood and plastic components in general-purpose tasks
• Use with cordless low-RPM drills and drill presses for controlled holes

Key specifications

• Type: twist drill bit
• Diameter: 6 mm
• Length: 100 mm
• Tip: four-facet ground carbide tip for improved centring
• Shank: cylindrical shank compatible with standard chucks
• Intended drilling mode: rotary (no hammer/percussion)
• Suitable materials: brick, glass, light concrete, marble, sheet metal, wood, plastics, ceramic tiles

How to use

Install the 6 mm Irwin twist drill bit into a compatible drill chuck and tighten securely. Select a low to moderate RPM appropriate for the material being drilled and ensure the drill is set to rotary mode only; do not use hammer or percussion settings. Position the bit perpendicular to the work surface, apply steady axial pressure and allow the carbide tip to cut through the material. Withdraw periodically on deeper holes to clear chips and reduce heat build-up. For ceramic tiles, start slowly to achieve precise centring before increasing speed slightly if needed.

Usage recommendations

Use the bit with cordless or low-RPM drills and avoid hammer action. For metal and masonry, use steady pressure and appropriate feed rate; for ceramic tiles use slow initial rotation to prevent slipping. Wear suitable eye protection and follow safe drilling practices for the material in use.