Widely Compatible:For 4.0-7.0 inch smartphones with width 60-90mm and thickness =15mm. Comes with two connectors: 25-40mm and 20-30mm and 4 rubber pad, which can be adjusted to correspond to different handlebar sizes, suitable for bike/mountain bikes/racing bikes/speed bikes/motorcycles/electric bikes. Easy to Install:Grefay bike phone mount can be easily installed on your bike handlebars without any tools. When using for the first time: adjust the V-slot spacing to tighten the phone. No need to adjust the latch spacing for later use with the phone intact. Full Camera Access:Grefay motorcycle phone holder has a built-in silicone pad to prevent the phone from scratching and reduce vibration. The left and right stand arm fix the phone on the left and right sides, without blocking the phone camera and flashlight. The bike phone holder can rotate 360 degrees and the angle can be freely adjusted. Sharing is both safe and convenient. One Second Lock:It only takes 1 second to install or remove the phone. Hold both arms and push inward to reveal the knob on the other end, then turn the knob to adjust the width of the phone holder to the size of your phone. Important note: Make sure there is enough space for the phone. Otherwise, excessive clamping force will damage the phone. New Upgrade in 2022:Grefay PBH503 bike phone holder has a in the joint ball, no longer afraid of breaking. It protects the phone well and won't move no matter where it is locked. Save 90% time compared to traditional mounts.