The 490L-SA-PI two star wafer tweezer for 4 wafers has a solid upper paddle which allows greater surface contact. The solid upper paddle allows greater surface contact. It is excellent for use in loading wafer trays. 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 4 wafers, Solid Upper Paddle, Application: Top lip allows greater surface contact, Quality: , Surface Resistivity : Conductive, Shape: Straight, Material: Anti-Mag. SS, OAL: 5 (125mm), Body Width: 0.472 (11.8mm), Body Height: 0.157 (3.93mm), Tip Width: .472 (12mm), Tip Height: .125 (3.1mm)