Size4Suction cup materialSilicone SIMaterial hardness [Shore A]55 Shore AMaterial characteristicsFDA-compatibleNipple materialAluminumConnectionM3-MNumber of folds1.5Vacuum connectionM3-MDesign DataKE-FSGA 4 SI-55 M3-AGDesign Data Attribute Value d2 2.50 mm Dmax(S) 5 mm dn 1 mm Ds 4 mm G1 M3-M H 7.50 mm LG1 3 mm SW1 5 mm Z (Stroke) 1.50 mm