Rear lens cap for Sony E-mount

Just as it sounds, it's a rear lens cap for your E-mount lenses. 12 times cheaper than buying it from Sony! Works on my lenses and with my printer but tell me if you believe i should change anything.

edit:
Added a double mount to be able to mount two lenses back to back

Print Settings

Rafts:

Doesn't Matter

Supports: 

No