These stage light clamps are made of aluminum material, safe and durable with adjustable screw fits on most lamps. Suitable for LED lamps, stage lamps, hanging lamps, moving head lamps and more. Come and take them home! Features -Color:Silver -Material:Aluminum -Size:12.00X7.00X2.00cm/4.72X2.75X0.79in -Note:suitable for 30-52mm diameter tube. - These stage light clamps are made of aluminum material, safe and durable to use. - With adjustable screws design on the stage light truss clamps, suitable for most kinds of stage lights. - The hook is designed to fix the stage light on the truss, to increase the security and stability. - The stage lighting clamp is designed to look like a large hook that wraps completely around the truss. - And they feature non-slip that prevent the fixture from wobbling and provide a great way to make quick connections. Package list: 8 Clamps