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A drill bit is a sharp tool to create holes in materials like metal, wood, or plastic. Drill bits for spot welds are specially designed for creating holes in metal. They have a pointy tip that helps them pierce through the surface of the metal and a fluted body that cleans the hole as the bit goes through. Most of them are made from high-speed steel (HSS), tool steel that can withstand high temperatures without losing its hardness. HSS bits are also less likely to break or shatter than other types of drill bits.
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