The M-5-SA three star miniature straight tapered ultra fine pointed tweezers is primarily used for microscopy. The style 5 has the finest points available. Overall length is 3.13. It is made of anti-magnetic Neverust stainless steel.Specs amp; FeaturesUltra Fine Points, Miniature, Application: Microscopy - Tapered tips offer better visibility, Quality: , Surface Resistivity : Conductive, Shape: Straight Tapered, Material: Anti-Mag. SS, OAL: 3.13 (78.25mm), Body Width: .25 (6.25mm), Body Height: .06 (1.5mm), Tip Width: .004 (.1mm), Tip Height: .002 (.05mm)