Drill bit set GEKO G38115 — HSS metal and wood drill bits, 8 pieces

GEKO G38115 is an 8-piece HSS drill bit set designed for drilling in metal and wood. The set includes commonly used diameters and is intended for general-purpose workshop and DIY tasks where reliable cutting performance and durability are required. Bits are manufactured using grinding and milling methods to provide accurate hole geometry and straightness, suitable for drilling a range of ferrous and non-ferrous materials and timber at standard drilling speeds.

Advantages

The drill bits are made of high-speed steel (HSS) with a cobalt-enhanced composition that increases hardness, wear resistance and resistance to torsional stresses. A 130° point angle supports precise centring and efficient cutting across both metal and wood applications. Ground finishing and milled flutes improve dimensional accuracy and straightness of holes, while the cylindrical shank design ensures secure grip in compatible chucks.

Suitable for

• General metalworking and fabrication tasks
• Drilling in timber and wood-based materials
• Workshop repairs and installations
• DIY projects requiring a range of common drill sizes

Key specifications

• Material: High-speed steel (HSS) with cobalt additive
• Point angle: 130°
• Number of pieces: 8
• Shank type: Cylindrical
• Manufacturing method: Milled with ground finishing
• Drill diameters included: 14 mm, 15 mm, 16 mm, 16.5 mm, 19 mm, 20.5 mm, 22 mm, 25.5 mm
• Rotation direction: Right-hand (clockwise) cutting

How to use

Mount the cylindrical shank securely in a compatible drill chuck (sized for 1/2" or chucks accepting up to 13 mm where applicable). Select the appropriate diameter for the required hole and mark the drilling location. Use a suitable drill speed for the material being drilled—moderate speeds for harder metals, higher speeds for softer metals and wood—apply steady feed pressure and allow the bit to cut without excessive force. Clear chips periodically to prevent clogging and overheating; use cutting fluid or coolant when drilling harder metals to prolong tool life.

Usage recommendations

For best results when drilling metal, use cutting fluid and moderate spindle speeds; when drilling wood, ensure secure clamping of the workpiece and higher spindle speeds appropriate to the wood type. Replace bits that show excessive wear, chipping or loss of cutting performance to maintain hole quality and safe operation.