These Angled/Curved Cobaltima® micro fine pointed tweezers are ideal for microscopy. They are made of a cobalt alloy, which is extremely hard, temperature resistant to 932°F (500°C), anti-magnetic and corrosion resistant. The body is .04"(1mm) in thickness for light pressure use. The tips are radius which eliminates marring and scratching of delicate parts and wires. The handles are serrated for more control. The 7B-CO features serrations on the tips for better gripping power.