Wood Auger Bit GEKO G37404 8 x 460 mm spiral drill for wood

The Wood Auger Bit GEKO G37404 8 x 460 mm is a spiral drill designed for drilling deep, clean holes in wooden workpieces. With an 8 mm cutting diameter and a 460 mm overall length, the bit combines a long reach with a narrow bore suitable for dowelling, through-holes and passage drilling. A spiraled flute clears chips efficiently to reduce friction and prevent clogging during extended drilling operations. The bit is suitable for use with hand braces and with compatible power drills when appropriate adapters are used.

Advantages

The spiral design improves chip evacuation, maintaining a steady drilling speed and reducing the risk of jamming. The long overall length provides extended reach for drilling through thick panels or beams while keeping the cut precise. The 8 mm cutting diameter offers a common size for joinery tasks such as dowel holes and aligning components. The geometry of the cutting edge and flute promotes stable tracking in the wood, which helps produce cleaner hole edges and consistent diameter.

Suitable for

• Drilling deep dowel holes in cabinetry and furniture assembly
• Creating passage holes through beams, panels and boards
• Joinery and carpentry tasks requiring precise, narrow bores
• Field and site work using hand braces or compatible power drills with adapters

Key specifications

• Cutting diameter: 8 mm
• Overall length: 460 mm
• Spiral flute design for efficient chip removal
• Intended material: wood and wood-based materials
• Suitable for manual braces and compatible power tools with adapters

How to use

Select a drill or hand brace compatible with the bit’s shank and secure any required adapter if using a power drill. Mark the drilling position and, if needed, use a center punch or pilot mark to prevent walking. Begin drilling at low speed to engage the cutting edge, then increase speed as the flute clears chips. Apply steady, even pressure and withdraw the bit periodically to clear accumulated chips on deep cuts. After completing the hole, back the bit out slowly while the drill is still turning to avoid tearing the exit face.

Usage recommendations

Use appropriate cutting speed and consistent pressure for the wood species being drilled; denser hardwoods require slower speeds and more frequent chip clearing. Keep the bit clean and inspect the cutting edges before use. When drilling long holes, support the workpiece to prevent vibration and ensure accurate alignment.