You are purchasing a lot of 100 - 1 oz (30 ml) Clear Plastic Cylinder Round Bottles with standard screw-on caps. Bottles are made of PET (polyethylene terephthalate) plastic. Unlike HDPE plastic, these bottles have the transparency of glass. The bottle has a 20-410 neck and is 3 inches tall with attached cap and is 1-1/16 inch in diameter. Can be used for liquid and dry material. Can also be used to store small jewelry parts, beads etc. Makes a nice container for pill storage too. Available with black or white screw-on caps. Please specify cap color when ordering.