Drill Bit GRAPHITE spiral hex 25 mm for wood (57H259)

GRAPHITE spiral hex wood drill bit 25 mm (57H259) is designed for reliable and efficient drilling in soft and hard wood. The spiral flute geometry promotes fast chip evacuation, reducing clogging and allowing a cleaner hole. The hex shank fits standard chucks and quick-change adapters, ensuring a firm grip and simple bit changes for hand drills and corded or cordless power drills used in woodworking and DIY tasks.

Advantages

The spiral flute removes chips quickly, improving drilling speed and hole quality while reducing heat build-up. The hexagonal shank provides secure fastening in chucks and quick-change holders to minimize slipping during high-torque applications. The bit’s 25 mm diameter allows drilling large-diameter holes in a single pass, suitable for creating clearings for fittings, dowels or cable passages. The solid construction and precise geometry contribute to consistent performance and longer service life when used appropriately.

Suitable for

• Drilling clearance and through-holes in soft and hard wood
• Creating openings for dowels, plugs, and cable routing
• Carpentry, joinery and general woodworking tasks
• Home improvement and DIY projects using hand or power drills

Key specifications

• Diameter: 25 mm
• Flute type: Spiral flute for efficient chip evacuation
• Shank type: Hexagonal shank for secure chuck and quick-change compatibility
• Intended material: Wood (softwood and hardwood)
• Compatible tools: Hand drills, corded and cordless power drills

How to use

Secure the drill bit in the drill chuck or quick-change adapter until it is firmly held. Mark the drilling position on the workpiece and, if necessary, clamp the workpiece to prevent movement. Start drilling at low speed to establish the hole, then increase speed as needed while maintaining firm, steady pressure. Withdraw the bit periodically for deep holes to clear chips and prevent clogging. After use, clean wood debris from the flute and store the bit in a dry place.

Usage recommendations

Use appropriate drill speeds for the wood type: lower speeds for hard wood and higher speeds for soft wood. Apply steady axial pressure without forcing the bit, and keep the workpiece secured. For longer service life, avoid excessive heat by clearing chips regularly and allowing the bit to cool between long drilling runs.