RUKO KEB-Set 10-Piece HSS-Co Twist Drill Bit Set, 1-10 mm, DIN 338, Split Point, 135°

Professional machinists and maintenance technicians rely on the RUKO KEB-Set 10-piece HSS-Co twist drill bit set for precise drilling in tough materials. Each bit is manufactured from high-speed steel with 5% cobalt, fully ground for accuracy, and features a 135° split point that self-centers and reduces walking. The set covers diameters from 1 mm to 10 mm in 1 mm increments, making it a versatile choice for workshops and production environments.

Key specifications

• Material: HSS-Co (High-Speed Steel Cobalt), 5% cobalt content
• Number of pieces: 10
• Drill bit sizes included: 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0 mm
• Shank type: Cylindrical
• Drill bit type: Twist drill bit
• Standard: DIN 338
• Point angle: 135°
• Point type: Split point (self-centering)
• Surface treatment: Bright
• Cutting direction: Right-hand cutting
• Manufacturing process: Fully ground
• Packaging: Robust plastic case

Why choose it

The cobalt alloy enhances heat resistance and durability, allowing these bits to maintain hardness at elevated temperatures. The split point design eliminates the need for center punching and provides excellent centering accuracy, while the fully ground flutes ensure smooth chip evacuation. This set is a reliable choice for drilling alloyed and unalloyed steel, stainless steel (V2A/V4A), cast iron, non-ferrous metals, and hard plastics.

Ideal use cases

• Drilling stainless steel and high-alloy steels in metalworking shops
• Maintenance and repair tasks on machinery and equipment
• Precision drilling in cast iron and non-ferrous metals
• Creating holes in hard plastics for industrial applications

Good to know

The bits are organized in a robust plastic case for easy storage and quick size identification. Use appropriate cutting fluid when drilling hard materials to extend tool life. The cylindrical shank fits standard drill chucks. Right-hand cutting direction is standard for most drilling machines.