Premium pneumatic wheels on 42, 32 and 25 tanks, attach 5" sewer hose and open 3" waste valve to safety empty your tank. no lifting required. Comes completely assembled and is constructed of rugged, high density polyethylene. Each tank has (1) 3" bayonet inlet, (1) 3" bayonet outlet, (2) 3" caps, bobber guage, filler hose, steel tow bar and 5' sewer hose.