Saves Time: Large fill opening allows full 2. 5 gallon fill in vertical or horizontal position - embossed gallon scale to gauge content on 5 gallon only. Improves Safety: Heavy-duty faucet assembly is leak free. Saves Space: Designed to be stored and filled while placed in Tolko Space Station rack system to save valuable floor space. Applications: Storing and dispensing pre-mixed cleaning chemicals or chemical concentrates. Compatible with most cleaning solutions. Do not use with solvents or corrosive chemicals. See Space Station Racks for storage options. 4 pack, carton contains 4 carboys.