from FPC materials, this Flexible cable offer easy installation and perfectly matching original factory specifications for photography enthusiasts, professional photographers, and repair technicians needing to replace or upgrades their lens cables for use in photography studios, outdoor shootings, and routine maintenance, ensuring and equipment stability specifically for 24 70mm II Lens, this high Precisions Focusing Sensors Flexible cable ensures accurate autofocus and enhances lens Performances Enhances your lens functionality with replacement part,for maintaining camera Performances