where can i find 4 of these?

[CHOMPERS]

I dont know about your area but in mine you can rent them at places that rent construction equipment...

I have a better idea... Go to http://RentaMexican.com for all your tank moving needs. Personally, I use http://RentaCuban.com though.

 

[Euge]

$120!!! I got two for 20 pounds! And they rated to carry 100kg each