Canon YA2-0424 Manual-Focus Ring
Canon YA2-2063 Guide Collar
Canon YA2-4201 Hood Click
Canon YB2-0433 Rubber Mount
Canon YB2-0891 SW-Panel Tape
Canon YG2-0530 Front Frame
Canon YG2-2031 Power Diaphragm
Canon YG2-2169 Power Diaphragm
Genuine Canon power diaphragm assembly for the EF-S 17-85 4-5.6 IS USM lenses. Made by Canon Japan. Please note. Many times the power diaphragm unit is fine, just the FPC has broken connections. We sell the power diaphragm FPC separately, here.