Dual tubing olive assembly sets, for hose with outer-Ø 6 mm, 2 unit(s)Dual tubing olive assembly sets, for hose with outer 6 mm Autoclavable: yes. Suitable for retrofitting Nalgene vacuum flasks (PK40. 1ff) or carboys with 53 mm or 83 mm screw caps. To do so, two holes ( 10 mm for PP13. 1 or 16 mm for PP14. 1) must be made in the screw cap and the hose connectors fitted inside them. For hoses with inner 6 or 13 mm. 53 mm screw caps can only be fitted with 6 mm hose connectors, 83 mm screw caps with 6 mm and or 13 mm