ITEM NAME:4 "1/4" -20 Aluminum Rear Seat Suitable for Sportster Description: Mounting rear seat , not work with solo seats or side mount seats. Easy grip & quick release, no tool required to install & remove. If Plate has a plastic plug rather than a nut insert, remove plug and use nut kit to mount solo or rear seat Fits: 1996-2017 Harley Sportster, Fatbob, Streetbob, Road Glide, Ultra Glide, Touring and other model with 1/4-20 thread. Specification: Material: Metal Diameter: 17 mm / 0.67 inch Height: 12 mm / 0.47 inch Package Includes: 4 Pieces Seat Nut Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement. SKU: DMO0021073319459440.If Plate has a plastic plug rather than a nut insert, remove plug and use nut kit to mount solo or rear seat. Mounting rear seat, not work with solo seats or side mount seats. 4 Pieces Seat Nut. Easy grip & quick release, no tool required to install & remove.