?Width of Phone Cradle Clamp Arm: 2.0"-4.3" (Universal Phone Friendly). ?Depth of Phone Cradle: 0.78" (Thick Case Friendly). ?The length of the connection rod is greater than 0.82 '', The diameter of the connection rod is between 0.59 ''-1.18 ''. ?Warm Tips:Please confirm the size of your rearview mirror connecting rod!. ?Wide Compatibility? The car phone holder is designed to fit all 4.0-7.1 inch smartphones and phone cases. ?One-Handed Operation? Equipped with a quick-release button, adjustable clamp arm, and support foot, allowing easy one-handed insertion and removal of the phone. ?Original Patented Design Imitation crab claw design, firmly clamps the rearview mirror rod and never falls off ?4 joints with a double-ball head structure provide the most comfortable viewing angle. ? 90% of the main body is made of high-quality aluminum alloy. ?Designed for Car Rearview Mirrors? Aluminum alloy rearview mirror phone holder, a patented product specifically designed for car rearview mirrors! Doesn't block ventilation vents! No suction cups, that melt, loosen, or fall off!.