1 inch OFFSET ring mount with QD cam lock for use with 1 inch tactical flashlights or red dot sight with 1 inch main tube Made of solid aluminum alloy to withstand shock and recoilFits 7/8" Weaver or Picatinny rails and bases as commonly found on ARs and handguns with accessory railsOffset design allows easier access to flashlight tail cap button switchAccepts flashlights and red dot sights with 1 inch main tubeQuick detach QD cam lock installs and uninstalls in seconds 4 screws (two on each side) hold flashlight firmly in place.Anodized matte black finisWeight: 2.6oz.(100g)