Twist Wood Drill Bit GEKO G37358 — auger 12 x 230 mm (pack 25/100)

GEKO G37358 is a twist/auger wood drill bit with a 12 x 230 mm working size, supplied in pack formats of 25 or 100 pieces. Engineered for drilling clean, deep holes in solid timber and common wood-based materials, this auger-style bit combines a helical flute for continuous chip evacuation with a sharp screw point and straight shank for stable mounting in standard chucks. The geometry supports precise boring and fast penetration in soft and hardwoods used in joinery, carpentry and construction.

Advantages

The helical flute design efficiently removes chips from the hole, reducing clogging and heat buildup during prolonged drilling. The screw point provides accurate centring and gradual feed for controlled entry without excessive force. The straight shank ensures compatibility with a wide range of hand drills and drill presses, enabling uniform bore quality. Supplied in multi-piece packs, these bits offer consistent size and performance across repetitive drilling tasks, suitable for professional and workshop settings.

Suitable for

• Drilling deep, clean holes in solid timber and laminated wood
• Joinery tasks such as dowel and bolt hole preparation
• Carpentry and structural woodworking on-site or in workshops
• Production runs requiring consistent hole diameter and depth

Key specifications

• Cutting diameter: 12 mm
• Total length suitable for through and deep hole drilling: 230 mm
• Tip type: screw/auger point for self-feeding
• Flute: helical flute for chip removal
• Shank type: straight shank for standard chucks
• Material: hardened and ground steel appropriate for wood-boring applications

How to use

Secure the drill bit firmly in the drill chuck, ensuring the straight shank is centered and clamped. For accurate starting, use the screw point to engage the wood at low speed until the tip has bitten in, then increase speed and apply steady, moderate pressure while allowing the helical flute to clear chips. Withdraw the bit periodically when drilling deep holes to remove accumulated chips and prevent overheating. Use appropriate clamping of the workpiece and wear eye protection during operation.

Usage recommendations

Use the 12 x 230 mm auger bit for controlled, repeatable boring in softwoods and hardwoods; slow to moderate drill speed and periodic bit withdrawal improve hole quality and tool life. Store bits dry and organized by size to prevent corrosion and maintain consistent performance across packs.