2 - Aluminum 25 gallon Ballast tank. Both have sensors for capacity gauges
full they weigh 225 lbs each
both tanks have input and output 1" hose barbs welded
I have two back flow valves as well and mounting brackets per tank
Used to for weight in boats to create bigger wake
dimensions = 15.5" x 11.5" x 34"
should be able to be used as gas tank too.