RUKO SPB-DIN338 12.4mm Roll-Forged HSS Twist Drill Bit

The RUKO SPB-DIN338 12.4 mm roll-forged twist drill bit delivers reliable performance in general-purpose drilling across steel, cast iron, non-ferrous metals, plastics, and wood. Its roll-forged HSS construction provides a strong, wear-resistant cutting edge, while the 118° point angle ensures efficient chip removal and reduced walking. The black oxide finish improves lubricity and corrosion resistance, extending tool life in demanding workshop environments.

Highlights

• Roll-forged from high speed steel (HSS-R) for durability
• Precision ground to DIN 338 with h8 shank tolerance
• 118° point angle for accurate starts and smooth cutting
• Black oxide finish for improved wear and corrosion resistance
• Cylindrical shank fits standard drill chucks

In daily use

This drill bit is a dependable choice for maintenance, fabrication, and repair tasks. The 101 mm working length provides good reach for most drilling operations, and the right-hand cutting direction matches the rotation of standard drills. Whether you are working on a bench press or a hand drill, the SPB-DIN338 maintains consistent performance across a range of materials.

Full specifications

• Drill bit type: Twist drill bit
• Material: High Speed Steel (HSS)
• Manufacturing process: Roll-forged (HSS-R)
• Standard: DIN 338
• Diameter: 12.4 mm
• Total length: 151 mm
• Working length: 101 mm
• Shank type: Cylindrical shank
• Shank diameter: 12.4 mm
• Point angle: 118°
• Surface finish: Black oxide
• Cutting direction: Right-hand cutting
• Tolerance: h8
• Suitable materials: Steel, cast iron, non-ferrous metals, plastics, wood
• Series: Ruko 201 Series

Final note

RUKO's roll-forged HSS twist drill bits combine precision grinding with robust construction, making them a solid addition to any professional or hobbyist toolkit.