DUMONT Biology Grade Reverse (Self Closing) Tweezers Prod # Description Style Length Material PointsWidth x Thickness 515 DUMONT Biology N5 108mm SS 0.05 x 0.01mm 515-NM DUMONT Biology N5 108mm NM-SS 0.05 x 0.01mm Prod # Description Style Length Material PointsWidth x Thickness 510 PELCO® Biology by DUMONT EMX 105mm SS 0.08 x 0.04mm Prod # Description Style Length Material PointsWidth x Thickness 515-NM DUMONT Biology N7 115mm NM-SS 0.07 x 0.03mm DUMONT High Precision Grade Reverse (Self Closing) Tweezers extra-fine points, indented shanks Prod # Description Style Length Material PointsWidth x Thickness 5649 DUMONT High Precision N4 108mm SS 0.13 x 0.08mm 5749 DUMONT High Precision N4 108mm NM-SS 0.13 x 0.08mm super-fine points, slimmest shanks Prod # Description Style Length Material PointsWidth x Thickness 5650 DUMONT High Precision N5 108mm SS 0.10 x 0.06mm 5750 DUMONT High Precision N5 108mm NM-SS 0.10 x 0.06mm Prod # Description Style Length Material PointsWidth x Thickness 5753 DUMONT High Precision N7 115mm NM-SS 0.17 x 0.10mm Prod # Description Style Length Material PointsWidth x Thickness 5748 DUMONT High Precision N2a 118mm NM-SS 1.50 x 0.20mm Heavy Crossover, Reverse (Self Closing) Tweezer useful for metallurgical preparations and other similar applicationsprovides a firm grip Prod # Description Style Length Material PointsWidth x Thickness 514 Heavy, Crossover Self Closing Tweezer none 165mm SS 2.80 x 1.80mm Prod # Description Style Length Material PointsWidth x Thickness 516 Heavy, Crossover, Self Closing Tweezer, 45 degree tip none 162mm SS 2.60 x 1.60mm