Yking - 4 mm Glass Drill Bit - It is made up of high-speed steel and is suitable for heavy-duty jobs. It has a 135-degree split point for accurate centring and fast penetration. It provides excellent wear resistance and is ideal for multiple applications for ferrous and non-ferrous materials. It has a black oxide coating that prevents chip building, galling and welding. It is mainly used for low carbon, stainless steel and ferrous metals.
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