Comes in 5-Pack, size: 8#; Bottom Diameter: 33mm; Upper Diameter: 41mm; Height:31mm Please read the dimension description image carefully before making a decision (might have 1mm measurement error) Exhibit excellent resilience and retain pliability over a long period Please note these rubber stoppers are not food grade Warranty: Labasics 1-year limited warranty; if received damaged, please contact us immediately; we will solve it until satisfied