Condition : 100 brand new In Stock : Yes Ball Diameter : 20mm Wall thickness : About 1mm Tolerance : +- 0. 002Inch Ball Material : Polypropylene (PP) Processing : Molding & Grinding Features : Polypropylene balls are featured by : - Very light - Show good corrosion resistance and high temperature resistance up to 230degreeF 110degreeC - Can feature an equatorial seamline - Floating on water General Uses & Applications : : These PP hollow plastic balls are used as floating elements, they help to strongly reduce evaporation of liquids and emission of unwished steam. They also are frequently used even as decorative elements, cosmetic rollon, variety of medical and packaging uses. Balls are environmentally friendly non-toxic. Please be rest assured to use