Features: 5 size silicone bottle stoppers with food grade materials ensures sealed sealing for diverse containers, from kitchen seasonings jars to lab test tubes, offering versatile leak proof solution. Crafted from sturdy, nontoxic silicone, these reusable stoppers feature smooth surfaces for easy cleaning and withstand extreme temperatures ( 40°F to 446°F) without deformation. Ideal for home cooks, bartenders, lab technicians, and sustainable users seeking efficient, multi purpose sealing accessories for daily or professional use. Perfectly secure beverage bottles during travel, preserve condiments in pantries, organize craft supplies, or protect chemical samples in research environments. The simple design blends seamlessly into modern kitchens and labs, reducing waste by replacing once-only use caps while maintaining freshness and hygiene standards. Specifications: Materials: Silicone Size: As Shown in the Picture Detail Page Suitable Hole Inner Diameter: About. 5-9.3mm Package Includes: 50pcs Reusable Silicone Bottle Plugs note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!