Suction Cup Holder Esh-Hc-1-QS with Height Compensator, Vacuum Connection at top, Compensator Secured By Two Hexagonal Nuts. Height Compensator for Suction-Cup Holder=3 Mm, Volume=0, 385 Cm3, Assembly Position=Vertical, Design Structure= (* Vacuum Connection at top, * with Height Compensation) , Correlation to Suction-Cup Holder=Size 1, Festo