Sport Pilot Certified Flight Instructors - There are over thirteen separate logbook endorsements that must be specifically and EXACTLY worded when signing off logbooks for students or sport pilots for taking the written & practical tests, category, type and set endorsements, additional privileges, solo endorsement, biennial reviews etc. You could look up each of these endorsements and copy them from the Instructors handbook each time, or you could buy 13 different rubber stamps at $20 each! 

OR you could buy the Instructors Endorsement Pack. The Instructors Endorsement Pack contains 14 sheets of labels. Each sheet of labels contains 10 copies of a specific endorsement. Each 2” x 4” endorsement label is identified by title and FAR number, has the exact wording as required by the regulations, and has data-prompted blanks for the students’ name, your name, CFI cert.#, Biennial Flight Review Certification 61.56(a).