This black aluminum gas cap is a dome top

24mm) handlebars

and you can polish it up to a mirror finish for that show quality look

Mounting Specifications: Designed to fit in a standard 3/4-inch round mounting hole

Weight: 16oz (448g)

Axle Mount License Plate Bracket - 1 inch (25mm) Axles - Vertical or Horizontal Vendor_James Gaskets This black aluminum gas capAnother clever and clean license plate mounting solution from the Gasbox. This license plate bracket fits any 1" (25mm) axle, just install the steel plate bracket off your axle then attach the aluminum license plate bracket, either Vertical or Horizontal, with the supplied hardware. Made in Cleveland, Ohio USA. NOTE: Be sure to check your local laws regarding license plate orientation and location.