These sleek black PET cosmo round bottles include smooth black disc top caps. A great choice for dispensing a variety of products such as lotion or shampoo, the disc top caps allow a small amount of liquid through the closure's orifice. Simply press down on one side of the cap to expose the orifice and press the opposite side to close the cap when not in use. The caps on the 2 oz and 4 oz black plastic bottles have .270 mm orifices, while the 8 oz and 16 oz bottles come with caps that have .310 mm orifices.