The DDB-53 Bidirectional Clamp from Sunwayfoto features integrated double clamps that allow a camera mounted to a multi-purpose rail (available separately) to move in two different dimensions without moving your tripod or camera support. This clamp has a scratch-resistant black anodized finish and safety-stop relief grooves for additional security to protect your camera from falling. It's compatible with any standard Arca-Swiss style quick release plate.