Features:-Aluminum alloy thickened base, with a powerful desktop rotating clip, could be firmly fixed at the desktop.-With steel handle and M8 screw, smooth to operate.-The clamp bracket can be adjusted to fit horizontal deck rails or vertical posts and stair railings less than 61mm thick.-A sponge pad is added to the base clip to stop scratches on the desktop.Specifications:*Product Name:Aluminum Alloy Bracket Clamp*Size:120*120*30 MM/4.72*4.72*1.18 InchMaterial: Aluminum AlloyColour blackItem: Bracket clampHole Diameter: 12MMRange: 1- 61MMColour:black Material: Aluminum AlloyPackage Content:1 x Aluminum Alloy Bracket ClampNote:1. The genuine color of the item may be barely various from the photographs shown on web content attributable to many factors resembling brightness of your video display and light-weight brightness.2. Please enable slight manual dimension deviation for the data.