Complete Package Contents: Includes 1× round drill base, 1× double socket arm, 2 sets of M4 screws, and 4 wall anchors for flexible installation on various surfaces. Durable Aluminum Alloy Construction: Made of high-strength aluminum alloy for the drill base and double socket arm, ensuring reliability in harsh conditions. Features rubber-coated ball heads for anti-slip and wear-resistant performance. Secure AMPS Drill Base with 7-Hole Pattern: The round plate features an industry-standard AMPS hole pattern with pre-drilled holes for ultra-stable mounting on dashboard, wall, or desk. Universal Compatibility: Compatible with RAM Mounts and other 1”ball-size mounting systems, ideal for car, motorcycle, phone holder, action camera, GPS device, and marine electronic. Wide Application Scenarios: Perfect for boat, kayak, truck, car, SUV, and off-road vehicle, providing a sturdy base for versatile mounting needs. FPN 1" Ball Double Socket Arm with AMPS Hole Round Plate Base, Aluminum Alloy Arm&Drill Base, Compatible with RAM Mounts 1 Inch Ball Components, for Bike Car Motorcycle Phone Mount