Friend wanted a tap in her back yard patio. I wondered how I would drill a big hole to get a full sized shank through. I didn't have a deep enough hole saw to get through an insulated exterior wall, but then I saw this! I was able to use an extra long drill bit to get through the wall. I cut off the excess with a small pipe cutter, ran the beer line from the fridge to shank, insulated the line, and Bob's yer uncle! My friend can now sit in her yard, watch her koi pond and draw herself a tasty brew! I wonder how many of these I'll have to put together for other friends?