CET36DR New Klixon Overloads from older inventory. Klixon phenolic motor protectors for AO Smith  Pump motors for aprox 3 to 4 HP 12.5 Amps
1.25" Diameter Single Phase with Eared Base. Mounting holes are aprox. 1.5"' on center. New but out of warranty. You are buying as is but I do guarantee to be good. Any defect you can return with in 30 days for a complete refund.  I believe element current rating is 12.5 amps. I do not guarantee suitability for your application or motor. Contact Klixon ( Sensata technologies )for more information .