The 52mm Front Lens Cap for Fujifilm XF18mm f/2.0 R and Fujifilm XF35mm f/1.4 R Lenses by Fujifilm is a rigid, snap-on cap that affords protection from dust, fingerprints, and scratches. The cap can also snap easily onto any lens with a 52mm filter thread.
This cap is compatible with the following lenses:
XF18mm f/2.0 R
XF35mm f/1.4 R