The second generation of TRI-Backup Elite saddle rail guides supports a wider range of saddle angles. Newly designed double threaded holder prevents the bottle from loosening or falling off. Provides a mounting point for two bottle cages two CO2 cartridges and Nano AirBooster inflatortable{border-collapse:collapse;width:100%;}td{text-align: left;padding: 8px;}tr:nth-child(odd){background-color:#f2f2f2}th{background-color:#eb212e;color:white;text-align:left;padding:8px;} TECH SPECSVendorTopeak Manufacture NumberTBU-ELT2 Model NameTri-Backup Elite 2 CategoryHydration