This is an N scale kit for two sets of four Baldwin DT6-6-2000/RT-624 locomotive marker lights. They are designed to fit James' Train Parts DT6-6-2000/RT-624 locomotive kits.
This kit is only printable in the FUD & FXD materials and will require cleaning before painting. I recommend washing with warm soapy water then soaking in 'Goo Gone' or similar product for about 24 hours. Then rinsing off with warm water and allowing to dry.
For more information please see my blog - www.jamestrainparts.wordpress.com