RUKO HGB Set DIN 2181 HSS 60° No. 6x Centre Drill Set, 6 Pieces, Bright

Machinists and metalworkers rely on this RUKO centre drill set for precise centering and pre-drilling before turning, grinding, or further drilling operations. The set contains six high-speed steel (HSS) centre drills, sizes No. 1 through No. 6, each with a 60° countersink angle and Type A geometry with protective chamfer. The bright, uncoated finish provides clean cutting performance on steel, cast iron, non-ferrous metals, and plastics.

Key specifications

• Material: High-Speed Steel (HSS)
• Standard: DIN 333 A
• Countersink angle: 60°
• Number of pieces: 6
• Set contents: Sizes No. 1, 2, 3, 4, 5, 6
• Drill type: Centre drill
• Cutting direction: Right-hand cutting
• Surface finish: Bright (uncoated)
• Point angle: 118°
• Shank type: Cylindrical
• Packaging: Plastic case
• Application: Centering, pre-drilling for turning, grinding, or further drilling
• Suitable materials: Steel, cast iron, non-ferrous metals, plastics
• Tool geometry: Type A (with protective chamfer)
• Manufacturer series: Professional Line

Why choose it

RUKO's Professional Line centre drills are manufactured to DIN 333 A standards, ensuring consistent geometry and reliable performance. The HSS construction offers a good balance of hardness and toughness for everyday workshop use, while the bright finish reduces friction and improves chip evacuation.

Ideal use cases

• Creating accurate centre holes in workpieces for lathe turning
• Pre-drilling pilot holes before drilling with larger twist drills
• Preparing workpieces for grinding operations
• General metalworking and maintenance tasks

Good to know

The set is supplied in a plastic case for organized storage and easy size identification. Each drill features a 60° countersink angle, which is the standard for centre holes that will later accommodate lathe centres. The Type A geometry includes a protective chamfer on the outer diameter to prevent damage to the countersink edge.