RUKO SPB-set 19-delige DIN 338 HSS-Co spiraalboorset 1-10mm

This 19-piece twist drill bit set from RUKO stands out with its 5% cobalt alloyed high-speed steel (HSS-Co5), which delivers significantly better heat resistance and wear behaviour than standard HSS bits. Ground from solid with a split point and 135° point angle, each bit starts fast and centres accurately without walking, even on curved or smooth surfaces.

Highlights

• 19 bits in 0.5 mm increments from 1.0 mm to 10.0 mm
• HSS-Co5 (5% cobalt) for high toughness and temperature resistance
• DIN 338 short series, type N, right-hand cutting, cylindrical shank
• Split point 135° – self-centring, low thrust, precise hole position
• Bright/bronze surface finish, h8 shank tolerance
• Supplied in a steel sheet case for safe storage and transport

In daily use

The set covers the most common drilling diameters for workshops, metalworking, maintenance and installation. It is suitable for alloyed and unalloyed steel, stainless steel, cast iron, non-ferrous metals and plastics. The split point reduces the need for centre punching and minimises wandering on contact, while the cobalt content allows higher cutting speeds and longer tool life in demanding materials.

Full specifications

• Product type: Twist drill bit set
• Number of pieces: 19
• Material: HSS-Co (5% cobalt)
• Standard: DIN 338
• Diameter range: 1.0 – 10.0 mm (0.5 mm increments)
• Shank type: Cylindrical
• Point angle: 135°
• Point type: Split point
• Cutting direction: Right-hand
• Manufacturing process: Ground from solid
• Surface finish: Bright / bronze
• Tolerance: h8
• Container material: Steel sheet

Final note

A complete, ready-to-use set for professional drilling in steel and stainless steel, with a practical storage case and consistent quality across all diameters.