Made of high quality aluminum alloy material, strong and durable. Weight: 110g. Size: 8.5*5*2cm 1/4'' Metal Screw Attachment (to attach to your camera); There are 3/8'' screw holes on the bottom, with a 1/4-3/8" adapter screw ,for most DSLR camera tripod monopod stabilizer ball heads There are two bubble levels included, to help you perceive the correct shooting direction more accurately Quick Release Plate has a non-slip function Rubber Pad, which can well protect the camera. This Aluminium Clamp Adapter with Quick Release Plate compatible most ballhead gives you the freedom to remove the camera from the head without detaching it from the plate and put it on any other Acra-Swiss Style Systems.