The universal Skycaddie cart mount is the perfect option for your SX400/500/550 GPS rangefinder. This high-quality clamp features a one-click expansion with 360º rotation and gives the option to view your GPS rangefinder in either portrait or landscape view. The easy adjusting sturdy clamp fits on all bars from 15mm to 45mm diameter, so will fit on any make or model of cart trolley out there. The compact size makes for easy transportation and set-up. Skycaddie quality and durability ensure a cart mount that is built to last and will give you years of trouble-free operation.