I used this piece to hook up a permanent septic system to my park model RV. the parts that thread on to this are cheap and easy to find at your local hardware store, and having this piece made the whole system go together perfectly.
These were the exact product I was looking for. After going to numerous RV dealers as well as plumbing wholesalers, which none of them ever heard of such a fitting, the ones I received were the exact fitting I was looking for to connect 3" abs pipe to my waste water tanks. The Bayonet Fitting ends turn so make easy removal when time to unhook to move the RV.
Although a little pricey for what it is, this product is worth the convenience of being able to plumb with standard ABS fittings. Cleaner and smoother transition from tank to drain, therefore nothing getting caught in the pipe like in those flex hoses. Great product, I wish it was available in stores.