Size33Suction cup materialSilicone SIMaterial hardness [Shore A]55 Shore AMaterial characteristicsFDA-compatibleNipple materialAluminumConnectionG1/4"-MNumber of folds1.5Vacuum connectionG1/4"-MKE-FSGA 33 SI-55 G1/4-AGDesign Data Attribute Value d2 17 mm Dmax(S) 38 mm dn 4.40 mm Ds 30 mm G1 G1/4"-M H 31 mm LG1 11 mm SW1 17 mm Z (Stroke) 9 mm