It is aftermarket parts compatible for Harley Sportster,Wide Glide,Street Bob,Roadking, Fatbob, Streetbob, Softail, Dyna,Street Glide,Road Glide,Ultra Glide,Touring 1996-later and other model
Thread type is 1/4"-20, replaces the standard seat bolt
Mounting rear seat to top fender,Not work with solo seats or side mount seats
Knurled sides for easy grip & quick release,no tool required to install & remove