#4 Black Natural Rubber Laboratory Stoppers Size 4 1-HOLE STOPPER 6/pack RS-4H
6/pk #4 Black Rubber Laboratory Stoppers Size 4 #RS-4H. Natural Rubber.
Drilled Tapered Rubber Stopper Set – Perfect for Bottles & Fermentation Needs
With its precise design, it provides a flawless seal while accommodating your airlock or tubing needs—ensuring that every brew is protected from contamination and capable of achieving its full potential.
Rubber Laboratory Stoppers 1-hole Assortment in Sizes:1 2 3 4 5 6 #RS-ASST3
6 piece Black Rubber Laboratory Stopper Assortment Contains: 1-Hole in sizes: 1, 2, 3, 4, 5 & 6