This thumb grip is perfectly designed for Ricoh GR III, GR III HDF, GR IIIx, and GR IIIx HDF digital cameras. It slides securely into the hot shoe without blocking any controls, providing a natural resting spot for your thumb to improve ergonomics and one-handed shooting comfort. The grip stays on your camera to protect hot shoe contacts from dust, moisture, and rust, while its firm lock absorbs micro-vibrations for sharper shots and better balance. Made from premium aluminum, it is lightweight yet durable, seamlessly matching the camera body for a clean, integrated look.