Nakpunar 6 pcs Glass Bottle Stopper Nakpunar Brand 6 pcs Glass Bottle Stopper with leak proof rings. 18 mm Works with most of wine bottles, Nakpunar brand corked bottles (except cut crystal shape spherical bottle) Made with high quality glass this economic glass stoppers are a must in your kitchen. The rings will create air and leak proof barrier and will keep your liquors, fruit juices, perfumes safe.