【Fully Ground】The drill bit is fully ground from solid material, dimensionally precise and high-quality performance. 【High Heat Resistance】With its high heat resistance, this drill bit can handle intense drilling tasks without losing its sharpness or durability. 【Cobalt-Containing】This drill bit is made of for M35 alloyed HSS steel with 5% Cobalt content, which makes it suitable for tough or hard metal drilling applications such as stainless steel, Cr-Ni, and special acid resistant steels. 【Wide Range of Sizes】Available in sizes ranging from 3.0mm to 6.5mm, this drill bit offers versatility for various drilling needs. 【Quantity and Color】Each package includes 1 x Drill Bit in AS show color.