Leak Resistant Bottle, 4mL Polypropylene with Caps (ide mouth Capacity: 4-5 milliliters Thread: 13-425 Diameter: 16 (mm) Material: Poly propylene Color: Natural Matching Closures are bagged separately, and packed with bottles Double bagged twist-tied for reduced particulate Molded tamper proofing bead for use with shrink band 20,000 – 40,000 bottles