Made of Light weight Aircraft Aluminum， Aluminum construction with black finishFits Most 12 & 20 Gauge ShotGuns and/or 25 to 45mm ShotGun BarrelsHas 1 hole on 2 rails for Attaching a Sling Swivel Mount， you can use all 3 Rails at the same timeEasy to Install，comes ready to mount，hex wrench tool & hardware included3 piece design for clamping shotgun/paintball barrel and flashlight tubeCompatible firearm barrel range .75 to 1.1-Inches diameterFlashlight clamping range diameter .75 to 1.0-InchesApprox. Dimensions: 2.36 in x 2.17 in x 1.97 in (6.0 cm x 5.5 cm x 5.0 cm)May require minor adjustments to fit barrel properlySpecifications:Material: Light weight Aircraft AluminumWeight: 220gColor: Black