25.4mm Food Grade Hollow PP Plastic Balls Polypropylene Roller Balls for Roll on Bottle

25.4mm Food Grade Hollow PP Plastic Balls Polypropylene Roller Balls for Roll on Bottle. Compliant with FDA standard, inert to alcohol, essential oil, deodorant and cosmetic serum, no chemical precipitation after long-term liquid soaking. Much lighter than solid PP & stainless steel balls, rolls smoothly with slight pressure, uniform liquid outflow, comfortable skin touch without cold feeling. Perfect roundness, mirror smooth finish without burrs, no bottle jamming, well control liquid dosage, leak-proof for roll-on bottles. Resist oil, acid, alcohol and most cosmetic solvents; withstand high temp sterilization & hot filling, stable in wide temperature range without crack. Lower cost than steel balls, in stock common sizes:16mm/19.05mm/20mm/25.4mm/30mm, custom size & color acceptable. Eco-friendly recyclable material, meet EU cosmetic packaging environmental requirement.