The KegLand Duotight Push - In Reducer is a must - have for homebrewers and beverage enthusiasts. Use it in your home brewing setup to connect different sized tubes for gas or beverage lines. With sizes of 6.5 mm (1/4 in.) on one end and 8 mm (5/16 in.) on the other, it's easy to fit into your existing system. It's simple to use, just insert the tubing and you're good to go, no need for clamps. This reducer is reliable and long - lasting, thanks to its double O - ring design and EPDM material.