Cold Shoe Mount on Top --- ST-07 has a cold shoe mount on top, which allows adding microphones, photographic lights and other equipment,perfect for vlogging. 1/4'' Screw on Bottom --- There is a 1/4'' screw on the bottom of the phone tripod mount, so you can mount it on any tripod which has 1/4'' thread. Wide Compatibility --- The phone tripod mount can work with most smartphones with or without a phone case, the extension size is . Safe and Sturdy --- The phone tripod mount is made by high quality ABS, can fix your phone firmly and sturdy, no need to worry mobile phone falls down. Super Lightweight --- The phone tripod mount is only 37g, super lightweight and portable, perfect for smartphone vlogging or videomaking.