The Starlink Mini Mount Magnetic Car Roof Mount comes with4 high-strength magnets deliver up to 265 lbs of holding force to keep your starlink mini magnetic mount stable on bumpy off-road tracks and high-speed highway drives without slipping or scratching vehicle metal surfaces.(Requires separate magnetic metal plates when mounting onto non-magnetic glass or aluminum vehicle bodies for proper magnetic hold.) A3mm PC shield with aluminum frame shields your device against hail, heavy rain, snow, gravel, branches, and UV rays, delivering 360-degree impact defense while maintaining open rear access for power ports and flag-pole adapters for your starlink mini mount.