QUALITY CONE STYLE BOTTLE STOPPER KITS Each Kit includes Chrome Plated Cone Style Bottle Stopper bases with threaded posts for easy attachment with just a hex key wrench. Actual threading is M8-1.25 or M10-1.5 (approximate US 5/16 or 3/8). Hardware only, wood is not included.These chrome stopper blanks have a silicone rubber seal which seals out all outside air.
