Canon XD2-1100-202 Retaining Washer
Canon YA2-0037 Zooming Collar
Canon YA2-0124 Friction Rubber
Canon YA2-0424 Manual-Focus Ring
Canon YA2-0427 Gear 2
Canon YA2-0596 EF Screws
Canon YA2-0929 EF Screws
Genuine Canon collar retaining screws for the collar used in the EF 70-200 2.8 L USM, EF 70-200 2.8 L IS USM, and the EF 70-200 2.8 L IS II USM lenses.  Package of 1 screw. Made by Canon Japan.
The collar used with this screw is in stock here.