Cap Assembly, 24 mm, without mounting Bracket, This is a 24 mm cap assembly only and is used to replace a cap on ABI instruments that already has the mounting bracket for this cap. This assembly includes the cap with tubing installed. The tubing comes with 1/4-28 tube nuts and ferrules ready to connect to existing 1/4-28 couplers. If you have the large bottle kit or want to put 450 ml bottles with 28 mm screw caps on any of these locations use part number: 102-107187.