Wine Better-TopUp (Sold as a Set of 2) New way to top up carboys without use of water, marbles or good wine; The tubes float in wine to displace air out of carboys. See How-To video in youtube Wine Better-TopUp Wensi; Durable food-grade plastic Dimension: L7.5 x D1.1 inches / D28 mm x L190 mm Single volume: approx. 100 ml; weight: 2.9 ounce /83 g