Made from 304 stainless steel this fitting has a 1/2" hose barb fitting and a 1.5" TC base.
The barb is measured by the outside diameter.
Wild Goose Filling recommends the use of flexible 3/8" ID product tubing with its fillers, and the oversized barb ensures a tight fit.
The product tubing presses over the barb and a hose clamp is used to secure the tubing to the barb. This creates a liquid-tight fit.
Overall length is 2.125" (5.4cm).