HAWEEL 2 in 1 Car Rear View Mirror Stand Mobile Phone Mount Holder for iPhone 6 / iPhone 5 & 5S & 5C / Smartphone, Clamp Size: 40mm-80mm(Black) Suitable for: mobile phone /smart phone /GPS /PDA / MP3 / MP4 devices which width is between 40mm-80mm Rearview clamp adjustable thickness 6.5 to 15cm, 360 degree rotation, easy adjustment for optimal viewing Extra-firm goose neck absorbs vibration, providing a stable viewing environment Note: Clamp did not work well with rounded rearview mirrors