1. All-metal structure, strong and durable, wide clamping range, small clamping diameter 1cm, large opening 5.5cm 2. This is a combination accessory, including a large crab clamp as shown in the picture and a small black head, etc., which can be locked after adjusting the angle. The top of the gimbal is a standard 1/4 camera thread, which can be connected to the camera and astigmatism equipment with a 1/4 hole. 3. The crab clamps are all-metal structure, sturdy and durable, with a wide clamping range, a small clamping diameter of 1cm and a large opening of 5.5cm Clamp - High-quality aluminum alloy material, anti-friction and durable. Maximum opening size about 55mm, can be firmly clipped on the bicycle handlebar, table, monopod or other objects with a diameter or thickness less than 55mm. Easy to Attach - The clamp lock and open are controlled by the metal screw crossbar, simple installation and effortless operation. Anti-slip rubber pad on the inner side, reduce scratches, make the installation closer. Widely Suitable - With standard 1/4 and 3/8 screw holes for use alone or with the screw adapters, install on camera, flash, LED light, monitor screen, tripod, ball head or magic arm. 360 Swivel Mini Ball Head - Universal 1/4 screw interface fits most cameras and other accessories. With the removable hot shoe adapter and 1/4 threaded hole in the bottom, can be used with this C-clamp, or be mounted on the camera, tripod, etc. UTEBIT Super Clamp with Mini Ball Head 360 Swivel Aluminum Alloy Ball Head Articulating Camera Clamp for Cameras, Flash, Tripod, LCD/DV Monitor, LED Light, Gopro Super clamp with 1/4 and 3/8 screw hole, it can be used with other photography accessories. The package comes with a 1/4 to 1/4 screw and a 1/4 to 3/8 screw, it will help you expand the application. This clamp and ball head have anti-slip rubber to protect your accessories from scratches and make the installation more closely. This clamp and ball head are made of aluminum alloy and stainless steel. It is durable. The maximum load of the clamp and ball head is 3 kg. Color: Black Quantity sold: 1 piece becomeveryrich