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Ultra Micro Grain Carbide Aluminum End Mills for Roughing To Finishing Description 1. The shank can be customized according to customers' requirements. 2. Reduce the rudding coefficient & save the processing time, Specializing in high speed cutting of CNC drilling machine and dry-type process machining. 3. Solid carbide lasting long life in hardened steels, Grain size carbide, high toughness, high -wearing feature. 4. We supply different type of drills bits, such as twist