Size20Suction cup materialNitrile rubber NBRMaterial hardness [Shore A]55 Shore ANipple materialAluminumConnectionG1/8"-MNumber of folds1.5Vacuum connectionG1/8"-MKE-FSGA 20 NBR-55 G1/8-AGDesign Data Attribute Value d2 11 mm Dmax(S) 21 mm dn 3.50 mm Ds 18.10 mm G1 G1/8"-M H 21.20 mm LG1 7.50 mm SW1 14 mm Z (Stroke) 5 mm