Image Stabilizer, Power Diaphragm unit are included. The lens is already adjusted by manufacture and so the sharpness is guaranteed perfect.
Make sure your lens is USM version.
It won't work for STM version Lens.
Please check the sample picture and make sure your lens is the same model.
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If you don't need the front lens and can use your original front lens, I can sell it without front lens for $80 discount.