Features: - The clamps bracket may be adjusted to fit either horizontal deck rails or Vertical posts & banisters less than 52mm in thickness. - Suitable for microphone cantilever bracket and other audio accessories. - The hole diameter is 11mm. The clamp can easy to clip on the workbench, table, headboard or other objects up to 5.2 cm thick and the nut can be easily adjusted to hold the lamp in place. - Plastic, very solid, simple clamps accommodate all swing lights with stems. Specification: Item Name:Bracket Clamp Hole Diameter:13mm Clamp Range: 1- 52mm Product Dimensions (L*W*H): 120*45*35 MM / 4.72*1.77*1.38 Inches Product Color: Black Main Material: Plastic Application: Mic Stand / Desk Lamp / Desktop Magnifier Bracket / Balloon Arch Metal Clips / Bracket Package Includes: 1*Bracket Clamp Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Made from high-quality materials, our tools products are durable and affordable to meet your daily needs. Please check the product size and model before placing an order to ensure it is the product you need. When you encounter a problem, please contact us and we will help until the problem is perfectly solved. When you receive your product, whether you are satisfied or not, we want to hear your opinion. Every customer can enjoy free refund or exchange service for damaged/quality problem products.