Die cut letters are applied directly to the vehicle. Clean transfer of letters only. Premasked for easy application. Application kit and instructions included. 7 Year premium cast vinyl permanent self sticking. Simple designs recommended. Maximum size not to exceed 3 1/2x6. Minimum 5/16 letters with 1/16 stroke. Minimum 3/64 between letters. No cut out areas less than 3/64. Note: We reserve the right to modify your art as necessary to fit this production method.