Chapin Ground-Driven Tow Sprayer - 15-Gallon Capacity, 40 PSI, Model# 97650 &#160;Uses the patent-pending Tube Compression Peristaltic Pump to ensure that the flow rate varies with the speed of the tractor or ATV towing it Totally mechanical system does not require a battery hook up Easily attaches to any tractor, ATV or UTV Ideal for spraying herbicides, pesticides and fertilizers Wide opening with tethered cap Chemical-resistant tank for mess-free mixing