Highest quality Swiss made tweezers|Precise tips with great attention to detail|S – Higher carbon stainless steel, when strength and hardness are of highest concern|SA – Standard material is ESD safe, anti-magnetic stainless steel|NC – Super Alloy (Ni-Cr-Mo) is six times harder than SA, anti-magnetic|TA – Titanium alloy, anti-magnetic, very high heat resistance (1600°F, 800°C)|BR – Brass (copper-zinc alloy) anti-magnetic, good for scratch sensitive applications