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Fine Platinum Ring Production High-Stability Carbide Center Drill. Superior Hardness: 64-67 HRC hardness resists abrasive wear 3 times longer than standard HSS. Wide Material Compatibility: Suitable for steel, stainless steel, cast iron, copper, aluminum, and plastics. Custom Coatings Available: Options include TiN, TiAlN, TiC, or Uncoated to suit specific needs. Fast Sample Delivery: Samples ready in 3-7 workdays via express couriers like DHL or FedEx. Bulk Delivery Options: Bulk orders delivered in 7-30 workdays by air or sea freight. Diverse Size Range: Available in metric (from 0.5mm) and imperial (from 1/64") sizes.