Vacuum Cups and Suction Cups Model: Universal Flat Series Part Number: F3-ESD (Electro-Static Dissipative Nomastat™)Vacuum Cup/ Suction Cup No.Flared Overall Dia.D Overall Dia.d Fitting Dia.H Static HeightLoad Capacity* at 24 in. Hg (609.6mm Hg) [2:1 Safety Factor]Recommended Fitting (Click for Info)Suspension Group for Cups F3-ESD (Electro-Static Dissipative Nomastat™) 0.14 in. (3.6 mm)0.12 in. (3.0 mm)0.05 in. (1.3 mm)0.28 in. (7 mm)20 grams