Product Descrition:Detailed install instructions will be included and should only take 5-10 minutes to install.Minor trimming of the moldings will be needed, any pair of scissors will do the job.This trim is designed to sit right on top of your existing factory molding and enhance the current look.Please feel free to contact if you have any questions.Fitment:For 2009-2013 Toyota Corolla CE Sedan 4-Door/LE Sedan 4-Door/S Sedan 4-Door/XLE Sedan 4-Door/XRS Sedan 4-Door/For 2012-2013 Toyota Corolla L Sedan 4-DoorFor 2009-2011 Toyota Corolla Base Sedan 4-DoorInstallation process:Measure the distance of the slot on your roof.Cut the trim to the measurement you jt took (measure twice and cut once).Cleaning off the area of application with rubbing alcohol or waterRemove the strip covering the adhesiveApply the trimto theroof