This hot shoe thumb up grip with bubble level from KIWIFOTOS is a CNC-machined metal that slides snugly into Fujifilm X-PRO1 Camera’s hot shoe mount.The thumb up easily provides secure-feeling and comfortable grip.With the thumb up, you can securely grip the camera and hold it in any position.The bubble level can help you to align your camera for level horizontal shooting. As it fits into your camera's hot shoe mount, it also serves to protect the shoe's electronic contacts from dust, oil, moisture and accidental impact.