Fits Special 1-1/16"(27mm) size units on Chrysler :300 3.5L 2005-2010;Town & Country 3.3L 3.8L 1996-2010/ 4.0L 2008-2010. Suitable For Automotive And Industrial Oil Pressure Switch Applications. Manufactured From Drop Forged Vanadium Steel For Maximum Strength And Longevity.