It was just what I needed, they are a bit big for a 4 gallon Kubota purchased from Costco but overall they fit pretty well and most importantly, the hole is correct. right size. These 4 gallon cleaners sold at Costco have a 2 3/4 inch hose inside with a bag attached. Most shop style vacuums are the standard 2 1/2 inch size. I don't understand why Kubota decided to go bigger. So if you have a large inlet hose, they will work.