Size42Suction cup materialNitrile rubber NBRMaterial hardness [Shore A]55 Shore ANipple materialAluminumConnectionG1/4"-FNumber of folds2.5Vacuum connectionG1/4"-FKE-FSG 42 NBR-55 G1/4-IGDesign Data Attribute Value d2 17.80 mm dn 4.40 mm Dmax(S) 45 mm Ds 42.60 mm G1 G1/4"-F H 61 mm LG1 12 mm SW1 17 mm Z (Stroke) 20 mm