Standard Plastic phone clamp for phones up to 3.5" wide. Universal design Can be used as a table base Silicone rubber pads for secure grip Compatible with smartphone up to 3.5" wide, and accommodates most slimmer phone cases as well. It is ideal for capturing group photos, self-portraits, and for general hands-free operation as well as Rollocam Mount. Best for use with Ball head or tilting mechanism.