Water Poly Tank Resists Cracking Features: Stock tanks that resist denting or cracking from the effects of weather, accidents or ill-tempered animals. Safe for all livestock; hogs, pigs, cattle, horses. Use it in confinement, field, feedlot or pasture. All parts are uniform in thickness with no thin corners or edges. All corners and edges are rounded and smooth. Order Online: 3/4" Plug (F100153)Bulkhead Tank Fitting (S228001)1" Plug (F156140) for older model 6' Tanks that do not have bulkhead fitting1.5" Plug (F160996) for older model7.5' & 9' Tanks that do not have bulkhead fitting Specs Product# Weight 6' x 2' deep335 gallons(FPSR62) 57 lbs. 7.5' x 2' deep530 gallons(FPSR752) 100 lbs. 9' x 28" deep950 gallons(FPSR928) 140 lbs.