... .None,HRC40 Anti-magnetic Anti-acid ST-12 Precision Circuit Board TweezerStainless steel tweezers, anti-corrosion refined. Better strength, flexibility, fingers ... powerful than the standard, when the circuit board it will not bend, components will not fall.TS-13 Tweeze (round): This round ... the narrow. Material302 MagnetismNone Length135mm RigidityHRC40 ST-12 Precision Circuit Board Tweezer