This plastic bottle filler is an excellent choice for attaching to spigots of bottling buckets or attaching to tube on opposite end of racking tubing. It has a 7/16" OD and a 1/2" ID and a spring-loaded check valve to shut off the flow of liquid. Simply push the filler down on the bottom of the bottle until the beer reaches the top. After removing the filler the perfect amount of head space is created.

Used with 7/16" hose.