Feature: 1. EXTERNAL EQUIPMENT: 2.5cm diameter standard bracket ball head, can be expanded to articulating arm and other equipment like video lights, etc. The tray with non slip pad to protect equipment from scratches.    2. EASY TO MOUNT: Equipped with 2pcs 1/4in screws for most waterproof cameras, waterproof housing. Mounting plate has 3 threaded holes, you can adjust the distance between handles according to your needs.    3. ALUMINUM MATERIAL: Made of high quality aluminum alloy material with CNC machining and surface anodized treatment, durable for long term use.    4. EASY TO INSTALL: Ergonomically designed handle is more comfortable to operate, easy to install and remove,able to secure the handle to the bottom of the tray with wrenches and screws.    5. GOOD FOR SHOOTING: Very practical and convenient, suitable for underwater photography, diving, snorkeling to use, so that your shooting will be more stable with better shooting effect.       Specification:            Item Type: Underwater Camera Tray Material: Aluminum Alloy Color: As Shown Application: For Underwater Shooting Product Size: Ball Head Diameter: Approx.2.5cm/1.0in Weight: Approx.744g/26.2oz Interface: 1/4in Screw                Package List:    2 x Handle    1 x Mounting Plate    1 x Wrench    12 x Mounting Screw    2 x Camera Screw    4 x Gasket        Note: Please allow 1‑3cm error due to manual measurement. Thanks for your understanding.