Drill bit Irwin 10501932 twist drill bit 8 mm

Irwin 10501932 is an 8 mm twist drill bit designed for cordless low-RPM multi-purpose drilling. As a standard twist drill, it creates precise round holes with an 8 mm diameter suitable for construction, assembly and repair tasks. The bit features a unique four-facet ground carbide tip that reduces required drilling pressure and ensures accurate centring, and it is intended for rotary drilling only (no hammer/percussion).

Advantages

The carbide-tipped geometry delivers lower drilling pressure and improved centring compared with standard ground bits. Optimised for cordless, low-RPM operation, the drill bit maintains performance across a range of common materials including brickwork, breeze block, wood, drywall, slate, plastics and sheet metal. Its design also minimizes walking on ceramic tiles and provides reliable penetration even in hardened floor tiles. The bit is compact and straightforward to install in compatible chucks, enabling quick tool changes and repeatable hole sizes.

Suitable for

• Drilling brickwork and breeze block
• Drilling wood and drywall for construction and repair
• Drilling plastics and sheet metal for assembly tasks
• Drilling ceramic and hardened floor tiles with reduced walking

Key specifications

• Type: twist drill bit for rotary drilling (no hammer/percussion)
• Diameter: 8 mm
• Tip: four-facet ground carbide tip for lower drilling pressure and precise centring
• Intended use: cordless low-RPM multi-purpose drilling
• Suitable materials: brickwork, breeze block, wood, drywall, slate, plastics, sheet metal, ceramic tiles

How to use

Install the 8 mm twist drill bit securely in the drill chuck and set the drill to rotary (non-hammer) mode. Use low to moderate RPM appropriate for the material being drilled and apply steady axial pressure while allowing the carbide tip to cut. For ceramic or hardened tiles, start at a low speed and maintain firm, controlled pressure to prevent walking; consider using a small centre punch or tape to help initial positioning if needed. Withdraw the bit periodically on deep holes to clear debris and avoid overheating.

Usage recommendations

Use proper personal protective equipment such as safety glasses and gloves. Match drilling speed and feed to the material: lower speeds for hard or brittle materials (tile, sheet metal), moderate speeds for masonry and timber. Avoid hammer action and excessive pressure to preserve the carbide tip and prolong bit life.