CNC machined non reflective black Delrin allows your favorite flashlight to be mounted to a Weaver rail. Flanges on both sides make this bushing guaranteed not to, ‘walk out of the mount. For use with Female Picatinny Mount. Will fit Streamlight Junior, Mini Maglite, Brinkmann Legend Light and Pro-Max Mini and any other light with a outside barrel diameter of .700". For use with Female Picatinny Rail Mount PMF001. **Streamlight Junior is a registered trademark of The Streamlight Corporation. MiniMaglite is a registered trademark of the Mag Instrument, Inc. Legend light and Pro-Max Mini are registered trademarks of the Brinkmann Corporation.