SIMPLE, EASY SOLUTION - the spring clamp and phone holder kit is a great simple solution to hold your phone, music device, or other small device and position it where you need it. FLEXIBLE AND ADJUSTABLE - Features a 24" flexible modular plastic hose arm. It is fully and repeatedly adjustable and will stay in place without springing back. FITS ALL POPULAR SMARTPHONES, WITH AND WITHOUT CASES - Adjustable phone holder can fit devices from 2.25" to 4" wide, and is deep enough to accomodate common phone cases. This includes virtually all devices, including the iPhone 10 and 11, Samsung Galaxy s10 and s20, the Galaxy Note 10… basically, 4" is pretty wide. HEAVY-DUTY CLAMP - Heavy-duty spring clamp opens up to 2" and makes attaching to flat surfaces quick and easy. READY TO USE - Comes pre-assembled and ready to use. A simple solution to hold your phone, music device, or other small device and position it where you need it.