The Quad Lock Universal Adaptor can be directly adhered to smartphones, cases, iPads, tablets or any flat metal or plastic surface and is compatible with all Quad Lock Mounts. The Patented Dual-Stage Lock makes it quick and easy to attach or detach your device, whilst giving you the peace of mind to know your device is securely locked. At just 4.5mm thick, the Quad Lock Universal Adaptor fits seamlessly onto the back of smartphones and cases.