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The KARNASCH HIBROACH (Gold-Line) series represents the pinnacle of annular cutting technology. These German-engineered cutters are specifically designed for use with magnetic core drilling machines to produce burr-free, high-precision holes in various types of steel and alloys. Unlike standard twist drills, these cutters only remove a thin ring of material, resulting in significantly faster drilling speeds and reduced energy consumption.
Gold-Line Coating: Features a specialized surface treatment that reduces friction and heat buildup, significantly extending the service life of the tool even during dry drilling.
Fully Ground Construction: Every cutter is manufactured from a single piece of high-performance high-speed steel (HSS-XE), ensuring maximum structural integrity and concentricity.
Advanced Tooth Geometry: Designed with staggered tooth heights and varied angles to ensure smooth chip evacuation and prevent the tool from jamming in the workpiece.
Weldon Shank (19mm / 3/4"): Features the universal 19mm Weldon shank system, making these cutters compatible with nearly all major magnetic drill brands.
High-Efficiency Boring: Requires significantly less feed pressure than traditional drill bits, reducing wear and tear on your drilling machinery.

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