Size20Suction cup materialSilicone SIMaterial hardness [Shore A]55 Shore AMaterial characteristicsFDA-compatibleVacuum connectionG1/8"-MKE-SUF 20 SI-55 G1/8-AGDesign Data Attribute Value Dmax(S) 22.80 mm Ds 20 mm dn 3.10 mm G1 G1/8"-M H 15.50 mm LG1 7.50 mm SW1 14 mm Z (Stroke) 2 mm