AMPS 4-Hole compatible - This square industry standard hole configuration allows it to be positioned horizontally or vertically. Simply convert a 22mm ball to an AMPS 4-Hole pattern. High-quality materials and reinforced composite design - Enjoy peace of mind with Arkon Mounts products. We use premium-grade materials to ensure that your device is held securely and stands the test of time. Arkon Mounts quality products - For over 30+ years, we have served customers globally with solutions for mounting phones, tablets, and other devices. As industry leaders, we're committed to providing heavy-duty, high-quality products that last.