Twist one of the three rubber protrusions off and the solid stopper becomes a one-hole stopper. Twist another one off, and have a two-hole stopper. Twist the last one off, and it becomes a three-hole stopper. Made of "white" natural rubber, with safe, convenient, countersunk 5 mm holes. Top diameter 32 mm Bottom diameter 26 mm Height 24 mm 5 stoppers per pack. |