It is a 12" domed false bottom with 3/8" barb. For insulated 10 gallon round beverage containers, like Igloo or Rubbermaid coolers, or any container with at least a 12" opening at the top. Made from stainless steel with 3/32 perforated holes on 5/32 centers. The barb fitting is 3/8", 12" round, heavy duty 18 Gauge stainless steel, 3/32 holes on 5/32 centers, 3/8" stainless steel barb fitting Included, 7/8" hole in the center will fit any 1/2" threaded fitting, includes 12" of 3/8" high-temp silicone tubing.