1.Package included：50 sets rabbit nipples，Come with 50 pcs spring and 50pcs T Tubings which can fix nipples on wire mesh. 2.Easy to install：works with 5/16 ID Tubing，Just connect it to the hose pipe (soft tube with inner diameter (8mm)) under low water, then hook it to rabbit cage, save your labor and time. 3.Ideal for Rabbits, Ferrets, Chinchilla or any other small animals, Can be used with a variety of wire cages. 4.High-Quality Materials:-- this rabbit drinkers are made of high quality metal and plastic material, no rust, durable and long service life. 5.Works with either a gravity feed or a regulated pressure system.