Mini Speeder marker lights are only 36mm (1 7/16) in diameter and 63mm (2 1/2) long, and have a 3/4 long 3/8 UNC stud. Lights are chrome plated, pre-wired, and come with your choice of dual or single filament bulb. Two different styles to choose from smooth or ball milled. All these lights are supplied with red, as well as amber lenses. Sold in sets of 2.