Not sure if I can post that link (they're not a RC sponsor - it's been a while; is that still a rule?) If you go to harbor freights website the ones I used are called "dual cup suction lifter" and provide a solid handle and are red in color. The website shows 125 lbs per each one but the box states 200 lbs - it's harbor freight so I used four of these and we didn't really use them as the sole means of lifting the tank, but a good way of slight lifts and maneuvering the tank from the garage through the house and into the stand.
I did make sure to clean both the tank and the rubber suction cups thoroughly to ensure they would work well - you have to be careful not to get dust or other dirt on these surfaces or they will slip off.
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