Canon YB2-0738 Zoom Encoder
Canon YB2-0804 Guide Collar
Use option to choose from available sizes. 
Canon YB2-0889 Scale Window
Genuine Canon scale window for the EF 24-105 4.0 L IS USM lenses. Made by Canon Japan.
New tape is recommended when installing this window, available here.
Canon YB2-0891 SW-Panel Tape
Canon YB2-1305 Name Ring
Canon YB2-1326 Collar Screw
Genuine Canon screw to retain all sizes of collar YB2-1328 for the EF 16-35 2.8 L II USM lenses and other Canon imaging products.  Package of 1 screw. Made by Canon Japan.
Canon YB2-1493 Guide Collar
Canon YB2-2090 Scale Window
Genuine Canon scale window for the EF 70-200 2.8 L II IS USM lenses. Made by Canon Japan. We recommend using new tape when installing this window, available here.
