Improves Grip and Handling, Slides into Camera's Hot Shoe, Maintains Access to Controls, High-Quality Metal. Designed for the Sony Cyber-shot RX1 & RX1R digital cameras the Pro Thumb Grip from FotodioX helps you maintain a secure grip on the camera while shooting. The grip is 2 long and slides into the camera's hot shoe to provide a place for your thumb to rest near the control wheel improving comfort ergonomics and stability especially when you are shooting one-handed. The device maintains access to your essential controls and can swing away if necessary. The aluminum grip features a cold shoe on top for mounting other accessories.