Quality Material: The chicken drinking cups are made of quality plastic, very durable and solid, not easily to be broken.Easy to use: The yellow trigger on the cup that can attract the chicken to peck at it. When the chickens peck at the yellow trigger, the chicken's drinking valve automatically fills the plastic cup with water, providing them with clean water.Size: The poultry watering cups measures approx. 3.15 x 1.97 inches, red color. PVC tee fittings measure approx. 2.76 x 1.18 inches, white color.Wide Application: Suitable for chicken, duck, bird, quail, pigeon, parrot, bird, etc unattended automatic water supply and drinking water..Package includes： 12 chicken waterer, 12 nuts.You can use the 3/8" drill bit to hole in a bucket and push in poultry water drinkers for chickens, screw wingnut tight. If happens to leak, you can check the o-ring whether being seated properly. If not, you can open it and fixed quickly and easily. 1.Quality Material: The chicken drinking cups are made of quality plastic, very durable and solid, not easily to be broken. 2.Easy to use: The yellow trigger on the cup that can attract the chicken to peck at it. When the chickens peck at the yellow trigger, the chicken's drinking valve automatically fills the plastic cup with water, providing them with clean water. 3.Size: The poultry watering cups measures approx. 3.15 x 1.97 inches, red color. PVC tee fittings measure approx. 2.76 x 1.18 inches, white color. 4.Wide Application: Suitable for chicken, duck, bird, quail, pigeon, parrot, bird, etc unattended automatic water supply and drinking water. 5.Package includes： 12 chicken waterer, 12 nuts.You can use the 3/8" drill bit to hole in a bucket and push in poultry water drinkers for chickens, screw wingnut tight. If happens to leak, you can check the o-ring whether being seated properly. If not, you can open it and fixed quickly and easily.