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Super sharp diamond-coated metal for faster drilling. Patented thread design to quickly remove excess material and prevent the drill from getting stuck. Professional top coating provides additional protection against wear. The very hard chrome-vanadium steel contains a high amount of carbon for better hardening and a harder drill. Patented vacuum fusion plates, soldered at 1100°C, ensure efficient work even in difficult conditions. Durable plastic packaging and product holders for convenient shopping.
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