This 30mL (1oz) translucent natural high-density polyethylene (HDPE) narrow-mouth packaging bottle is supplied without a closure, to assist in feeding into filling lines. The single-use, break-resistant natural bottle allows easy viewing of liquid level. This bottle is leakproof when used with the appropriate Nalgene® closure. A variety of closure options is available separately. Bulk Packed. Leakproof. Bottle Material: High-Density Polyethylene (HDPE). Bottle Color: Transparent. Neck Type: Narrow Mouth. Closure Material: None. Height With Closure: 61mm. Height Without Closure: 58mm. Outer Diameter: 34mm. Neck Inner Diameter: 14mm. Closure Size: 20mm. Neck Finish: 20-415. Capacity: 30mL (1oz). Nalgene® #: 362089-0001.