The Beneath-the-Surface Model #3 Dual Arm Side Mount is the most Compact, Lightweight, Double-Handle Action Camera Tray System Made. The Handles are Adjustable from 5 3/8" to 6 5/8" (14.3cm to 16.83cm) between Inside-of-Grips for User Comfort and Control Accessibility. Model #3 Action Camera Tray System comes partially assembled. You simply need to attach the grip handles. Light Mounting Hardware and Tools included. The Tray System weighs 15oz (425.24g), the Tray Width is 8.5" (21.6cm). The Actual Arm Length is 5.5" (14cm) with Ball Mounts. The Dual Arm Side Mount has 303, 304 and 18/8 Stainless Steel Hardware, Arms and Tray is Durable DELRIN ACETAL Resin and the System is covered by a 12 month limited warranty.