Dsecription: 4Pcs White Silicone Rubber Liners for Cow Milking Machine  Specification: Material:Silicone Color: As picture shows Hole diameter 2.1cm x total length 31cm.  Feature: 1.Silicone Liners designed exclusively for our Cow Milking Machines 2.It is recommended from a hygiene perspective that various items (and especially liners) are replaced every year to ensure minimum bacterial build-up in your milking equipment. 3.During a heavy milking regime、 as a matter of routine、 liners and pipework should be inspected daily to ensure that all components are in good condition. 4.Store liners away from heat and sunlight. 5.These liners should be replaced after 1、000 milkings.   Package included: 4xSilicone Liners