Collapsible 2-1/2-liter bag with special rigid probe3-track watertight closure aids easy fillingRigid top portion with holes for easy handling or hangingOn/off flow clampSpecial cold temperature-resistant plastic will not crackRound ball-shaped end aids proper placementGraduated marking both liters and quarts | Jorgensen Collapsible Calf Drencher with Rigid Probe 2.5L | Size 2.5 liters