RUKO BSB-HSSCo-3,0-14,0mm 19-Piece HSS-Co Cobalt Twist Drill Bit Set, DIN 338, 135° Split Point, Metal Case

Precision-ground HSS-Co cobalt alloy with 5% cobalt content delivers heat resistance up to 600°C and tensile strength up to 1100 N/mm², making this 19-piece twist drill bit set a professional choice for tough materials.

Overview

The RUKO BSB-HSSCo-3,0-14,0mm set includes 19 spiral drill bits in diameters from 3.0 mm to 14.0 mm, manufactured to DIN 338 with a cylindrical shank and right-hand cutting direction. Each bit features a 135° split point for self-centering and reduced walking, bright finish, and h8 tolerance. The set is supplied in a metal case.

What stands out

• 5% cobalt HSS-Co for high heat resistance and durability
• 135° split point starts fast and accurate without center punching
• Ground from solid for precise geometry and long life
• Suitable for alloyed and unalloyed steel, stainless steel, cast iron, and non-ferrous metals
• Complete diameter range in one organized metal case

Technical details

• Material: HSS-Co (High-Speed Steel with Cobalt)
• Cobalt content: 5%
• Standard: DIN 338
• Drill bit type: Twist drill bit
• Point angle: 135°
• Point type: Split point (self-centering)
• Shank type: Cylindrical
• Surface finish: Bright (blank)
• Cutting direction: Right-hand cutting
• Number of pieces: 19
• Diameter range: 3.0 mm - 14.0 mm
• Included diameters: 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 11.0, 12.0, 13.0, 14.0 mm
• Case material: Metal
• Manufacturing process: Ground from solid
• Tolerance: h8
• Application suitability: Alloyed & unalloyed steel, stainless steel, cast iron, non-ferrous metals
• Max. tensile strength suitability: Up to 1100 N/mm²
• Heat resistance: Up to 600°C
• Product grade: Professional / Industrial

Our verdict

A comprehensive set for professionals who need reliable performance in tough materials, with the convenience of a organized metal case.