Vacuum Cups and Suction Cups Model: Universal Flat Series Part Number: F4.5-ESD (Electro-Static Dissipative Nomastat™) Vacuum Cup/ Suction Cup No. Flared Overall Dia. D Overall Dia. d Fitting Dia. H Static Height Load Capacity* at 24 in. Hg (609.6mm Hg) [2:1 Safety Factor] Recommended Fitting (Click for Info) Suspension Group for Cups F4.5-ESD (Electro-Static Dissipative Nomastat™) 0.2 in. (5.1 mm) 0.18 in. (4.5 mm) 0.09 in. (2.2 mm) 0.28 in. (7 mm) 50 grams