Features: 1. Compatible with 1/4" thread action cameras, Moment devices, and mobile phone clips 2. 1/4" threaded locking mechanism with anti-loosening design; secured via rotating disk. After initial lock, can be further tightened using included wrench 3. Fits a wide range of pipe diameters: 2225.5mm and 3032mm 4. Constructed from CNC-machined aluminum alloy for durability and precision 5. Sandblasted finish for enhanced texture and appearance Product Name: 1/4" Screw Bicycle Mount Clamp Product Dimensions: 50 x 50 x 19mm Main Material: Aluminum Alloy Finish: Sandblasted Color: Black & Red Style: B-Clamp Mountain + Wrench Package Contents: 1 x 1/4" Anti-Loose Bicycle Mount 1 x Hex Wrench Note: Light reflection and differences in display screens may cause slight variations in color between the product image and actual item. Measurement may vary by +/- 1-3cm.