Rokk Adjustable Deck MountDesigned for life at sea.The multi position mount is for fishfinders and small chartplotters. Install at the helm, RIB console, fishing boat dashboard, nav station and more.Specifications:Top Plate Size: 1.75" (44.50mm)Fits: Garmin GPSMAP 400-500 and echo™ 100-550Rotation: 360°Tilt: 270°Set & ForgetMetal on metal, ball and socket system gives smooth, secure adjustment. Zero loss of clamping force over time.Fully Versatile & Easily AdjustableSimply unlock, reposition, lock again. 360° of rotation. 270° of tilt. Locking design ensures high clamping force with minimal user effort.Extreme Marine Durable MaterialsCorrosion resistant marine grade aluminum, 316 stainless steel and glass filled nylon.Super ToughEngineered to withstand high shock loading.Quick FitSupplied with complete fixings for your installation.