The Quad Lock® Universal Adaptor can be directly adhered to smartphones, cases, iPads / tablets and most flat metal or plastic surface and is compatible with all Quad Lock® Mounts Secure Mounting The Patented Dual-Stage Lock makes it quick & easy to attach / detach your device, whilst giving you the peace of mind to know your device is securely locked Slim Profile At just 4.5mm thick, the Quad Lock® Universal Adaptor fits seamlessly onto the back of smartphones and cases Please Note: Use of the Universal Adaptor may interfere with Wireless Charging Included 1 x Quad Lock® Universal Adapter Technical 3M™ VHB adhesive Slim profile (only 4.5mm thick) Just 56mm wide and 66mm tall Durable and tough composite construction Surface Guidelines The Quad Lock® Universal Adaptor uses a 3M™ VHB 4952 Ahdesive which will adhere to smooth, non-textured, non-porous surfaces such as: Plastics such as PC, ABS, PVC, Nylon, Acrylic Non-painted metals Uncoated Glass The adhesive will not bond to the following substrates: Rubber, TPU, TPE, Leather, Silicone, Hydrophobic coated glass (Also known as anti-fingerprint glass, which is found on the back of most modern smartphones), Soft touch coating or paint, Low surface energy plastics such as Polypropylene (PP), Polyethylene (PE), Acetal, HDPE, Wood We highly recommend using a case with the Universal Adaptor if your phone has a glass back