PRIER's 630-8500 Mansfield style complete hydrant service kit combines three great kits into one. This all in one kit combines the 630-7755 and 630-7965 300/400/500 series wall hydrant service kit and handle replacement kit along with the 630-7500 vacuum breaker kit for the 400/500 series wall hydrants. This kit services the old style Mansfield 500 Series wall hydrants manufactured from 1960 to 2006, the Original and Diamond 300 Series wall hydrants manufactured from 1960 to present day and the Original 400 Series anti-siphon half-turn wall hydrants manufactured from 2006-2013 and the new 400 Diamond Series manufactured from 2013 to present. If you have a 300, 400 or 500 Series Mansfield or PRIER hydrant, this kit is for you.