2PCS Flex Cable Aperture Shutter For Canon 24-70mm 24-70 mm 1:2.8  L DSLR Camera
Feature:

Replace your damaged part for Canon 24-70mm 24-70 mm 1:2.8 L
Compatible With: Canon 24-70mm 24-70 mm 1:2.8 L

Package Included:

2 x Flex Cable Aperture Shutter

Detail pictures: