RUKO Professional HSS-G Ground Twist Drill Bit 12.8 mm DIN 338 Split Point

Drilling precise holes in tough materials like steel, cast iron, and non-ferrous metals demands a bit that stays sharp, centers accurately, and clears chips fast. The RUKO Professional HSS-G Ground Twist Drill Bit 12.8 mm delivers exactly that with a split point tip and precision-ground flutes.

Who is it for

Professional machinists, metalworkers, and serious DIYers who need a reliable, general-purpose drill bit for everyday drilling in metal, plastic, and wood. It fits standard drill chucks and is built for consistent performance.

Main features

• High-speed steel (HSS-G) with ground finish for durability and sharpness
• Split point tip (135°) self-centers and reduces walking on hard surfaces
• DIN 338 standard dimensions: 151 mm total length, 101 mm flute length
• Right-hand spiral flutes for efficient chip removal
• Bright surface finish resists corrosion and improves visibility

Specifications

• Drill bit type: Twist drill bit
• Material: High-speed steel (HSS-G)
• Diameter: 12.8 mm
• Total length: 151 mm
• Working length: 101 mm
• Shank type: Cylindrical
• Point angle: 135°
• Standard: DIN 338
• Surface finish: Bright
• Flute direction: Right-hand spiral
• Recommended materials: Steel, cast iron, non-ferrous metals, plastics, wood

Tips

Use cutting fluid when drilling steel to extend bit life. For deep holes, withdraw the bit periodically to clear chips. Store in a dry place to prevent corrosion.