Blue Magic Waterbed Fill & Drain Kit

I had a job for emptying a waterbed and this product performed awesome and the pump I used fit it perfectly and by the time I emptied it it had to have emptied every drop in the waterbed bladder cuz when I was done and the pump was just sucking air. I never picked up such a light water bed that’s been emptied in my life so that tool no doubt help pump every ounce of water out of it so when emptying a waterbed there is no better tool because in the past just siphon it you could have 10 gallons of water left or 5 gallons and water is 8 lbs a gallon but when I emptied it with this tool the residual water was non-existent and there was no weight. GREAT ITEM?????