Hello,

Can I delete k2 items from specific category, specific date range (ie before 30/11/2015), and delete the images also?

Using SQL from phpmyadmin.

Thank you in advance

Hello, you need to use SQL's delete function in the xx__k2_items database table:
www.w3schools.com/sql/sql_delete.asp

The images are stored in the /media/k2/items/cache folder.
You cannot delete images from the db, you have to delete them manually.