5 gallon water cap is for locking 3&5 gallon water bottle,55mm neck size,made of 100% new ... PE material, healthy,sanitary, 5 gallon water cap is for locking 3&5 gallon water bottle,55mm neck size,made ... :14.2g.-Thickness:1.10mm.-Height:40.10mm.-Perimeter:174.14mm.-Inner diameter:53.78mm.-Hardness:(15S,5TLER)41-100% new ... ,sanitary-The scoring is easy to tear.-Dust-proof-CQCS 5 gallon water cap