- Surface finish and classes: Surface roughness is below RZ2.5. Two product classes are available to suit different requirements. - Material and hardness: Made from high-carbon bearing steel, heat treated to hardness of HRC 48–50 for durability and long tool life. - Clamping compatibility: Suitable for clamping threading drills, drills, end mills, reamers, and related cutting tools. - Internal bore accuracy: Internal bore machining is performed by high-precision grinding in accordance with DIN standards. - Key benefits: Provides precise and stable clamping with low runout, robust wear resistance, and reliable performance in demanding operations. - Use scenarios: - In CNC drilling and milling setups where repeatable, accurate tool alignment and secure clamping are essential. - In production lines using threading drills and reamers that require DIN-standard bore tolerances and durable tooling interfaces. - In precision tooling fixtures and assemblies where high-hardness steel and fine bore finishing contribute to consistent performance over time.