Unprotected prop-shaft on your irrigation wells can maim or kill almost instantly. Prevent potential tragedy during pumping season with a Hastings Prop-Shaft Guard permanently in place at each of your wells. Fast and easy to install on most pump engines, they have a 2" slot on bottom for lubrication. Other features include: meets OSHA requirements, endorsed by farm safety authorities, protection against loss of life or limb, adapts to any internal combustion engine, rigid construction from galvanized steel, maintains a neat appearance year after year.