5-Piece Set HSS A-Type Center Drill Bits 60 Degree, Includes A0.5 A0.7 A0.8 A0.9 A1 High-Hardness & Wear-Resistant DRINYOUNG (Type A, 5pcs：A0.5 A0.7 A0.8 A0.9 A1)

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상품 특징

• 【Micro-Hole Precision 5-Piece Set】 Specifically engineered for precision machining, this set comprises five A-type high-speed steel centre drills in sizes A0.5, A0.7, A0.8, A0.9 and A1. This progressive combination of micro-sized drills precisely addresses centring and guiding requirements from ultra-fine micro-holes to standard dimensions, making it the ideal tool for precision component machining and instrument maintenance.
• Type A 60° tapered bore design: The standard Type A 60° tapered bore design ensures the machined centre bore perfectly matches the 60° taper angle of standard centres, providing the most precise positioning for processes such as turning and grinding.
• Precise centring ensures accuracy: Specifically engineered for machining high-precision centre holes, guaranteeing workpiece rotational concentricity and forming the foundation for subsequent turning and grinding precision.
• Robust and impact-resistant: High-speed steel composition combines exceptional hardness coupled withexcellent toughness, delivering wear durability and enhanced fracture resilience. Offers high operational tolerance and outstanding reliability.
• Cost-effective and ready to use: Low procurement costs withno specialised configuration required. Simply clamp and commence operations rapidly, significantly boosting production efficiency.
• Smooth debris evacuation and superior finish: Optimised geometric flute design facilitates uninterrupted debris removal, minimising clogging and delivering exceptionally smooth bore surfaces.

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