Electric water heater tune-up kit provides a quick and easy way to repair the most common items on an electric wather heater. The tune up kit helps prolong the life of your water heater by renewing the key electric components of your water heater. Our tune-up kits have serveral assortments to provide your many choice for your replacement work. ?Contents?(2) Water Heater thermostats: one is upper and another is lower thermostat. 120V ~ 480V, Temperature Adjustment Range: 90F ~ 150F. Thermo-O-Disc(TOD) Style, can exchangeable with Apcom Style. ?Contents? (2) Copper Heating Elements with Gaskets: 4500W@240 (3800W@208V), Screw-in Type. ?Contents?(1) Element wrench socket: One end size 1-1/2-inch hex removing all residential screw-in water heater elements and another end size 1-1/16-inch hex removing all anode Rod 3/4" NPT. 10" Length providing the clearance needed for a correct connection and easy loosening. ?Application?Plumber's TOD Style Thermostats Kit provides a quick tune-up to prelong the water heater's life. The Tune-up Kits in Plumber's pack has good compatibility, fitting Most Electric Water Heaters. ?ONE YEAR WARRANTY?If you find any issue not limited on quality problems, please contact us in time to support or return/refund, we will try our best to solve it for you, please rest assured to buy.