Knurled sides for easy grip & quick release, No tool required to Install & remove
Mounting rear seat to top fender,not work with solo seats or side mount seats
Thread type is 1/4"-20, replaces the standard seat bolt
It is aftermarket parts used for Harley Sportster , Wide Glide, Street Bob, Roadking, Fatbob, Streetbob, Softail, Dyna, Street Glide, Road Glide, Ultra Glide, Touring 1996-2023 and other model with 1/4"-20 thread