The 590T-SA-PI two star wafer tweezer for 5 wafers has a solid PTFE upper paddle which allows for less marring or scratching and has greater surface contact. The overall length is 5. The tool is made of anti-magnetic stainless steel and Features: serrated handles for better control.Specs amp; FeaturesWafer for 5 wafers, PTFE Upper Paddle, Application: PTFE upper paddle allows greater surface contact without scratching the wafer, Quality: , Surface Resistivity : Conductive, Material: Anti-Mag. SS, OAL: 5 (125mm), Body Width: 0.60 (15mm), Body Height: 0.15 (4mm), Tip Width: .638 (16.2mm), Tip Height: .106 (2.7mm)