Milk Bar Calf Self Feeder is the easy way to give milk to calves that don’t require hand-feeding. Exclusive nipple design slows down gulping which prevents choking and also promotes salivation, which is essential for proper digestion and stomach development. Watch calves feeding on MilkBar feeders!Patented E-Z lock mounting bracket will fit any rail width from wire up to 2.5 inches, will lock in place, yet is easily removed with a light touch of the catch.Durable grey poly container hooks onto wire or one-by-four wood rail and the ten gravity-flow nipples require no valves or tubes. Capacity is 15 gallons.