Size8Suction cup materialNitrile rubber NBRMaterial hardness [Shore A]55 Shore AVacuum connectionM5-FKE-SUF 8 NBR-55 M5-IGDesign Data Attribute Value Dmax(S) 8.40 mm Ds 8 mm dn 1.80 mm G1 M5-F H 14.20 mm LG1 5.50 mm SW1 8 mm Z (Stroke) 0.80 mm