Fenix Flashlight Ring Picatinny Rail Mount with Quick Rail Clip Black. These Flashlight Accessories from Fenix are expertly designed to accommodate any flashlight with a diameter between 0.9-1.02in to fit perfectly on your Picatinny rail and the adjustable clamping system ensures your light stays put even while you're reloading. The Fenix ALG-00 Picatinny Mount Ring screws easily into place without any tools making this a truly versatile mounting option. When you need to attach a flashlight for duty use use the Fenix ALG-00 Picatinny Rail Mount w/ Quick Rail Clip to get the job done right. Specifications for Fenix ALG-00 Flashlight Ring Picatinny Rail Mount with Quick Rail Clip: Manufacturer: Fenix Lighting Flashlight Application: Hunting Width: 1.8 in Fabric/Material: Aluminum Color: Black Finish: Anodized Matte Black Condition: New Height: 1.7 in Length: 1.4 in Package Contents: Fenix ALG-00 Flashlight Ring Picatinny Rail Mount with Quick Rail Clip Fenix ALG-00: ALG-00 Flashlight Ring Picatinny Rail Mount with Quick Rail Clip Black