Fisherbrand One-Hole Rubber Stoppers, Size: 15, Stopper Number: 15, Black, Diameter Bottom: 8.3 cm, Diameter op: 10.3 cm, Natural Rubber, Diameter Hole: 0.5 cm, Diameter Inner: 5 mm, For Use With: Inexpensive black natural rubber/SBR blend for genera
Fisherbrand Two-Hole Rubber Stoppers, Length: 3.9 cm, Size: 14, Stopper Number: 14, Black, Diameter Bottom: 7.5 cm, Diameter op: 9 cm, Natural Rubber, Diameter Hole: 0.5 cm, Diameter Inner: 5 mm, For Use With: General purpose use, Two Hole Taper Stop