This is the same as the Deluxe model, but it has a 1/2" barb attached to the ball valve for attaching high temp tubing. These innovative products are the highest quality available. All you need is a 7/8" drill bit. "Why pay a welder?" The stainless steel bulkhead fitting provides a watertight seal, and a 1/2" NPT port for attaching a 12" Boil Screen on the inside of your kettle. The stainless steel ball valve on the outside comes with an attached stainless steel 1/2" NPT X 1/'2" Barb. Sized to fit perfectly into a Sanke keg or brew kettle.