The STR4 Liner

It is a 22 mm mouthpiece liner, especially designed for our claws , Free Flow , Visi Claw . Its rubber formulation makes it lasting 3000 milkings and is a fast milk liner .It’s made to fit Full-Laval 185 gr. stainless steel special shell with 21 mm hole.
Can be used also as a two pieces liner with a special designed sight glass ( see picture ).