Yoke 20 Nut Motorbike Mount & Dedicated Cradle for Garmin Astro Devices (sku 49984)Yoke 20 Nut Motorbike Mount & Dedicated Cradle for Garmin Astro Devices Mount; Clips into the integrated spine connection on a wide range of Garmin GPS and satellite communication handheld devices Compatible Garmin: Astro 320 Astro 430 Astro 900 Yoke Nut Base Fits: Size 25mm Thread Pitch 1. 00mm Socket Size 36mm Colour Black Height 50mm Fitting tighten to manufactures torque setting Example of possible suitable bikes: Note: This is not a fully