KF10 KF16 KF25 KF40 KF50 , rubber gasket bracket aluminium alloy vacuum tube clamp , Vacuum bellows clamps
https://www.vogueparade.com/shopping/EN/200282142/1/1005001371459374/kf10-kf16-kf25-kf40-kf50-rubber-gasket-bracket-aluminium-alloy-vacuum-tube-clamp-vacuum-bellows-clamps//