- Set of 6 high-quality silicone O-rings for water bottles - Includes tweezers for easy and quick replacement of the rings - White silicone, soft, durable, and BPA-free, with no odors or flavors - Provide an airtight seal that prevents water leaks - Compatible with wide-mouth bottles of 12, 16, 24, 32, and 40 oz - Dimensions: outer diameter 5.6 cm, inner diameter 4.9 cm, thickness 0.2 cm - Easy to install and remove, ideal for keeping your bottles in optimal condition - Suitable for use in laboratory, office, sports, and outdoor activities - Replacement compatible with HydroFlask bottles and other wide-mouth brands - Durable, safe, and reusable material, ideal for frequent replacement