This is a sturdy aluminum smartphone adapter for tripods. It features the ability to set and fix the rotation angle as desired. It has a 1/4 screw hole, a cold shoe, and supports both horizontal and vertical orientations. Product weight: 123 grams Extension range: 60-89mm Size: Approximately 15cm (L) x 7cm (W) x 1cm (H) Ulanzi ST-27 Tripod Mount Smartphone Holder, All-Metal, Arca Type Base, Mobile Phone Holder with Cold Shoe, 360-degree Rotation, Angle Adjustable, Smartphone Tripod Adapter with 1/4 Screw Hole, Compatible with iPhone/Android/Cameras/Tripods/Monopods/Selfie Sticks With the increase in smartphone sizes, this adapter is compatible with large devices such as the iPhone and Galaxy S8+! The holder can accommodate smartphones up to 9cm wide. It enables photo shooting, video recording, live broadcasting, interviews, and more. 【Arca Type Base】The base, constructed with an Arca-type dovetail, functions as a quick-release plate and can be slid onto tripod heads and video heads that support the Arca Swiss mounting system for instant and easy attachment. 【With Cold Shoe】You can attach LED lights and microphones to the cold shoe mount. 【Universal Compatibility & Excellent Load Capacity】The Ulanzi ST-27 smartphone tripod mount has a 1/4 screw on the bottom for various tripods, and it is also designed with Arca Swiss. It weighs 123g and can support up to 1kg.