Size3Suction cup materialSilicone SIMaterial hardness [Shore A]55 Shore AMaterial characteristicsFDA-compatibleNipple materialAluminumConnectionM5-MNumber of folds2.5Vacuum connectionM5-MKE-FSG 3 SI-55 M5-AGDesign Data Attribute Value d2 1.80 mm dn 1 mm Dmax(S) 4 mm Ds 3 mm G1 M5-M H 10.20 mm LG1 4.50 mm SW1 7 mm Z (Stroke) 1.10 mm