Sunction cup complete: Serie: J 409, vacuum cleaner ESS-100-GT-G1/4-I easily interchangeable Height compensation suction cup holder=9 mm, Min. workpiece radius R=135 mm, Nominal diameter=5.5 mm, Suction cup diameter=100 mm, Suction cup volume=53.9 cm3, Diameter: 100, Colour: Black, Piston material: Vulkollan®, Series: ESS Vacuum connection: G1/4 Form: round deep, Series; ESS, Medium; atmospheric air following ISO 8573-1:2010 [7:-:-] Edit; via vacuum connection, Weight; 89.5g, Diameter; 100, Construction; round, bell-shaped, Hardness; 72 +/- 5, Corrosion class ;2 - moderate corrosion resistance, Nominal-diameter; 5.5mm, Ambient temperature; -10 to 80 °C, Vacuum connection; G1/4, Working pressure range, -0.95 bar.