A SET OF 5 SAUSAGE FILLER / STUFFER / MACHINE PISTON GASKETS. EACH MEASURES 12.70 CM INTERNAL AND 14.00 CM EXTERNAL (METAL PISTON NOT INCLUDED!) THEY FIT THE 3L, 5L AND 7L SAUSAGE MACHINES, SEE; http://www.ebay.co.uk/itm/5L-5-L-Sausage-Stuffer-Filler-Easy-To-Install-Anti-Rust-Salami-Maker-Commercial-/201643716586?hash=item2ef2e6efea:g:PxIAAOSw65FXrE6M