The DLC Shark is called that because of its spring loaded extremely wide mouth that opens to 3-3/8" allowing it to safely grip most smartphones. But, instead of teeth, it has a non-skid pad on each side of the interior of the mouth that protects the smartphone yet firmly holds the smartphone securely so that it can be attached to any tripod. The backside of the Shark has a standard 1/4"-20 tripod mount.