Bel-Art Dispensing/Drop 60ml (2oz) Polyethylene Bottles; 18mm Closure (Pack of 12) (F11637-0002) Dispensing bottle used to dispense solutions in a controlled capacity LDPE body for flexibility, elasticity, and impact, stress-cracking, and moisture resistance, and is lightweight Cylindrical shape for a wide variety of applications that require solution containment Screw closure with a spout secures contents to help prevent spills and evaporation Tip opening of 0.76mm (0.030") for distributing fluids, and is sealed with an included sealer cap