A ring flash provides an even light source that illuminates the subject from the lens. This provides a method for taking photographs without the camera or photographer casting a shadow into the frame. This isn't a ring flash, bur rather a ring light made with inexpensive white LED PVC strips (search: 12v pvc light strip on ebay). The lights are wired to a 12V DC wall wart. This is designed to print in three pieces on a smaller printer, or to be printed as a whole on a larger printer. Hit the customizer to remove the bolt ears if you have a large build space. I'm still waiting for a second light strip that's a bit longer to complete my outside track.This thing is very customizable and meant to work with any length light strip you can find. Please note the Strip Length variable refers to the INSIDE track circumference. Materials: Notes: ==Hot Shoe== ==Ring Flash== ==Wire Box==