Nikon SS901-87 Window Tape
Canon EF-S 18-55 3.5-5.6 Diaphragm FPC
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 YG2-2169 Power-Diaphragm FPC
Beseler 549-20-18 Bow Washer
Genuine Beseler bow washer #549-20-18 for the 23C, 23CII, and 23CII XL enlargers. Made by Charles Beseler USA. Exploded views for the 23C can always help you find the part you need.