UTT-T cork are designed especially for distilled spirits,wine,and other food products, integrated one-piece constrution make cork and cap inseparable. This free seal comes in any color combination and forms an excellent seal,no bottle opener is required. the T-Closurs forms a TCA free seal. thereby eliminating off-flavors associated with traditional tree bark closures, also eliminate cork dust and glue drops. they’re unbreakable and come in any cap/corq color combination imaginable. From the bottle open isn’t need bottle opener. Cork Cap height9.8mm Cork Shank Diameter19.3mm (+/- 0.5mm) Cork Shank length 19mm (+/- 0.5mm) Cork Total length28.5mm (+/- 0.5mm) Cork Total weight7 grams (+/- 0.5 grams)