RUKO SPF-Set9tlg-HSSCo 9-Piece HSS-Co Twist Drill Bit Set, DIN 338, Split Point, Sizes 2-10 mm, Metal Cassette

This 9-piece twist drill bit set from RUKO stands out with its cobalt-alloyed HSS-Co steel, which keeps the cutting edges hard and heat-resistant even when drilling tough steels. Unlike standard HSS bits, the 5% cobalt content allows higher cutting speeds and longer tool life in demanding materials.

Highlights

• 9 twist drill bits in a robust metal cassette, sizes 2.0–10.0 mm in 1 mm steps
• HSS-Co (5% cobalt) fully ground body for high wear resistance and heat resistance
• Split point with 135° point angle: self-centering, reduces walking and requires less feed pressure
• DIN 338 short series, cylindrical shank, right-hand cutting, Type N flute
• Suitable for alloyed and unalloyed steel, stainless steel, cast iron, and non-ferrous metals

In daily use

The split point geometry makes these bits ideal for precise hole positioning without a centre punch, while the cobalt alloy handles stainless and high-strength steels that quickly dull ordinary HSS bits. The metal cassette keeps the set organised and protected on the job site or in the workshop.

Full specifications

• Material: HSS-Co (5% cobalt)
• Number of pieces: 9
• Drill bit type: Twist drill bit
• Standard: DIN 338
• Point angle: 135°
• Point grind: Split point (self-centering)
• Surface finish: Ground
• Shank type: Cylindrical
• Cutting direction: Right-hand cutting
• Flute type: Type N (normal helix angle)
• Drill bit sizes (mm): 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0
• Tolerance: h8
• Manufacturing process: Fully ground
• Packaging: Robust metal cassette

Final note

A professional cobalt drill bit set that covers the most common metric sizes for metalworking, delivering clean holes and long service life in tough materials.