stopper with a hole in the middle and a removable cap (length 3.7 cm dia. 2.5 cm), which prevents liquid from leaking out of the cork.
Total length 10 cm
Penetration depth 8.5 cm.
Outer diameter from 3 to 5 cm, inner diameter 2.5 cm.
Color: black.
Material: silicone, phthalate-free.