Key Takeaways DLC (Diamond-Like Carbon) delivers high hardness and low friction, significantly reducing grinding heat and material buildup — ideal for high-RPM and extended use. Titanium / TiN (Titanium Nitride) offers a gold finish with strong wear and corrosion resistance — a highly recognizable, cost-effective choice for salons. Rainbow / TiAlN (Titanium Aluminum Nitride) combines […]

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