Our Labasics White Rubber Stoppers provide exceptional seal for many applications 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 22 packs (10 assorted sizes) : 3 packs for each size from 000# to 0#; 2 packs for each size from 1# to 6#; 1 pack of 7# Warranty: Labasics 1-year limited warranty; if received damaged, please contact us immediately; we will solve it until satisfied