The "7 mm Tülle" is slightly more in diameter to achieve a tight fit, but
it is designed for 7mm inner diameter hoses.
Same goes for the clamps, they are suited for 7mm inner diameter hoses,
which have 12mm outer diameter.
Edit: and the product description of the Tülle says "Für 7 x 12 mm Bier -
oder Kohlensäureschlauch.", the description of the Schlauch is "
Bierschlauch in 7 x 12 mm" so i'm pretty sure it will fit together.
[Editiert am 29.8.2013 um 17:46 von DerDennis]
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*Dunkles Lager, Magnum/Select/Tettnanger, S189 (Hauptgärung)
*Festbier, Northern Brewer/Tettnanger/Saazer/Select, S-189 (Nachgärung)
*Helles Lager, Tettnanger/Select/Saazer, S-189 (Nachgärung)
*Westy12 Clone, 21.6°P, W3787 (Lagerkeller)